[1.2.X] Fixed #14796 -- Modified order of operations performed on field names...

[1.2.X] Fixed #14796 -- Modified order of operations performed on field names by the inspectdb command so it doesn't generates model fields with names equal to Python keywords. Thanks pappjm at gmail dot com for the report, mmcnickle for the fix and Alex for simplifying the tests.

Backport of r15296 and r15297 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15301 bcc190cf-cafb-0310-a4f2-bffc1f526a37