during install... i get the following errors.... some where along lines XMLDB was upgraded within moodle versions with null's no longer suggested.

XMLDB has detected one CHAR NOT NULL column (name) with '' (empty string) as DEFAULT value. This type of columns must have one meaningful DEFAULT declared or none (NULL). XMLDB have fixed it automatically changing it to none (NULL). The process will continue ok and proper defaults will be created accordingly with each DB requirements. Please fix it in source (XML and/or upgrade script) to avoid this message to be displayed.
line 1874 of \lib\datalib.php: call to debugging()
line 352 of \lib\xmldb\xmldb_object.php: call to xmldb_debug()
line 255 of \lib\xmldb\xmldb_field.php: call to xmldb_object->debug()
line 359 of \lib\xmldb\xmldb_field.php: call to xmldb_field->setDefault()
line 543 of \lib\xmldb\xmldb_table.php: call to xmldb_field->arr2xmldb_field()
line 259 of \lib\xmldb\xmldb_structure.php: call to xmldb_table->arr2xmldb_table()
line 172 of \lib\xmldb\xmldb_file.php: call to xmldb_structure->arr2xmldb_structure()
line 153 of \lib\xmldb\xmldb_file.php: call to xmldb_file->arr2xmldb_structure()
line 341 of \lib\ddl\database_manager.php: call to xmldb_file->loadXMLStructure()
line 362 of \lib\ddl\database_manager.php: call to database_manager->load_xmldb_file()
line 663 of \lib\upgradelib.php: call to database_manager->install_from_xmldb_file()
line 420 of \lib\upgradelib.php: call to upgrade_plugins_modules()
line 1615 of \lib\upgradelib.php: call to upgrade_plugins()
line 434 of \admin\index.php: call to upgrade_noncore()
XMLDB has detected one CHAR NOT NULL column (moderatorpass) with '' (empty string) as DEFAULT value. This type of columns must have one meaningful DEFAULT declared or none (NULL). XMLDB have fixed it automatically changing it to none (NULL). The process will continue ok and proper defaults will be created accordingly with each DB requirements. Please fix it in source (XML and/or upgrade script) to avoid this message to be displayed.
line 1874 of \lib\datalib.php: call to debugging()
line 352 of \lib\xmldb\xmldb_object.php: call to xmldb_debug()
line 255 of \lib\xmldb\xmldb_field.php: call to xmldb_object->debug()
line 359 of \lib\xmldb\xmldb_field.php: call to xmldb_field->setDefault()
line 543 of \lib\xmldb\xmldb_table.php: call to xmldb_field->arr2xmldb_field()
line 259 of \lib\xmldb\xmldb_structure.php: call to xmldb_table->arr2xmldb_table()
line 172 of \lib\xmldb\xmldb_file.php: call to xmldb_structure->arr2xmldb_structure()
line 153 of \lib\xmldb\xmldb_file.php: call to xmldb_file->arr2xmldb_structure()
line 341 of \lib\ddl\database_manager.php: call to xmldb_file->loadXMLStructure()
line 362 of \lib\ddl\database_manager.php: call to database_manager->load_xmldb_file()
line 663 of \lib\upgradelib.php: call to database_manager->install_from_xmldb_file()
line 420 of \lib\upgradelib.php: call to upgrade_plugins_modules()
line 1615 of \lib\upgradelib.php: call to upgrade_plugins()
line 434 of \admin\index.php: call to upgrade_noncore()
XMLDB has detected one CHAR NOT NULL column (viewerpass) with '' (empty string) as DEFAULT value. This type of columns must have one meaningful DEFAULT declared or none (NULL). XMLDB have fixed it automatically changing it to none (NULL). The process will continue ok and proper defaults will be created accordingly with each DB requirements. Please fix it in source (XML and/or upgrade script) to avoid this message to be displayed.
line 1874 of \lib\datalib.php: call to debugging()
line 352 of \lib\xmldb\xmldb_object.php: call to xmldb_debug()
line 255 of \lib\xmldb\xmldb_field.php: call to xmldb_object->debug()
line 359 of \lib\xmldb\xmldb_field.php: call to xmldb_field->setDefault()
line 543 of \lib\xmldb\xmldb_table.php: call to xmldb_field->arr2xmldb_field()
line 259 of \lib\xmldb\xmldb_structure.php: call to xmldb_table->arr2xmldb_table()
line 172 of \lib\xmldb\xmldb_file.php: call to xmldb_structure->arr2xmldb_structure()
line 153 of \lib\xmldb\xmldb_file.php: call to xmldb_file->arr2xmldb_structure()
line 341 of \lib\ddl\database_manager.php: call to xmldb_file->loadXMLStructure()
line 362 of \lib\ddl\database_manager.php: call to database_manager->load_xmldb_file()
line 663 of \lib\upgradelib.php: call to database_manager->install_from_xmldb_file()
line 420 of \lib\upgradelib.php: call to upgrade_plugins_modules()
line 1615 of \lib\upgradelib.php: call to upgrade_plugins()
line 434 of \admin\index.php: call to upgrade_noncore()
XMLDB has detected one CHAR NOT NULL column (description) with '' (empty string) as DEFAULT value. This type of columns must have one meaningful DEFAULT declared or none (NULL). XMLDB have fixed it automatically changing it to none (NULL). The process will continue ok and proper defaults will be created accordingly with each DB requirements. Please fix it in source (XML and/or upgrade script) to avoid this message to be displayed.
line 1874 of \lib\datalib.php: call to debugging()
line 352 of \lib\xmldb\xmldb_object.php: call to xmldb_debug()
line 255 of \lib\xmldb\xmldb_field.php: call to xmldb_object->debug()
line 359 of \lib\xmldb\xmldb_field.php: call to xmldb_field->setDefault()
line 543 of \lib\xmldb\xmldb_table.php: call to xmldb_field->arr2xmldb_field()
line 259 of \lib\xmldb\xmldb_structure.php: call to xmldb_table->arr2xmldb_table()
line 172 of \lib\xmldb\xmldb_file.php: call to xmldb_structure->arr2xmldb_structure()
line 153 of \lib\xmldb\xmldb_file.php: call to xmldb_file->arr2xmldb_structure()
line 341 of \lib\ddl\database_manager.php: call to xmldb_file->loadXMLStructure()
line 362 of \lib\ddl\database_manager.php: call to database_manager->load_xmldb_file()
line 663 of \lib\upgradelib.php: call to database_manager->install_from_xmldb_file()
line 420 of \lib\upgradelib.php: call to upgrade_plugins_modules()
line 1615 of \lib\upgradelib.php: call to upgrade_plugins()
line 434 of \admin\index.php: call to upgrade_noncore()
XMLDB has detected one TEXT/BINARY column (welcome) with some DEFAULT defined. This type of columns cannot have any default value. Please fix it in source (XML and/or upgrade script) to avoid this message to be displayed.
line 1874 of \lib\datalib.php: call to debugging()
line 352 of \lib\xmldb\xmldb_object.php: call to xmldb_debug()
line 261 of \lib\xmldb\xmldb_field.php: call to xmldb_object->debug()
line 359 of \lib\xmldb\xmldb_field.php: call to xmldb_field->setDefault()
line 543 of \lib\xmldb\xmldb_table.php: call to xmldb_field->arr2xmldb_field()
line 259 of \lib\xmldb\xmldb_structure.php: call to xmldb_table->arr2xmldb_table()
line 172 of \lib\xmldb\xmldb_file.php: call to xmldb_structure->arr2xmldb_structure()
line 153 of \lib\xmldb\xmldb_file.php: call to xmldb_file->arr2xmldb_structure()
line 341 of \lib\ddl\database_manager.php: call to xmldb_file->loadXMLStructure()
line 362 of \lib\ddl\database_manager.php: call to database_manager->load_xmldb_file()
line 663 of \lib\upgradelib.php: call to database_manager->install_from_xmldb_file()
line 420 of \lib\upgradelib.php: call to upgrade_plugins_modules()
line 1615 of \lib\upgradelib.php: call to upgrade_plugins()
line 434 of \admin\index.php: call to upgrade_noncore()