Backing out fix for bug 287325 (initial implementation of custom fields): turns out the tree is not yet open for 2.24 checkins after all.  I'll check this back in once the tree opens for 2.24 checkins, which lpsolit says will be in about a month.

Bug 287325: an initial implementation of custom fields, including the ability to add text custom fields via the command-line script customfield.pl, search them via the boolean charts, display and edit them on the show bug page, and see changes to them in bug activity; r=mkanat, glob

Bug 304745: Move GetFieldID() out of globals.pl - Patch by Frédéric Buclin <LpSolit@gmail.com> r=wicked a=justdave

Bug 303413: Remove "use Bugzilla" from all of the pm files.  All of the cgi files already have it loaded, and it causes circular dependencies.
Patch by Max Kanat-Alexander <mkanat@bugzilla.org>
r=justdave a=justdave

Patch By Max Kanat-Alexander <mkanat@bugzilla.org> r=LpSolit, a=justdave

of other items.

Patch By Max Kanat-Alexander <mkanat@bugzilla.org> r=LpSolit, a=justdave

Bug 301967: Some .pm files have invalid POD syntax - Patch by Frédéric Buclin <LpSolit@gmail.com> r=wurblzap a=justdave

Bug 301463: Move CheckFormField and CheckFormFieldDefined into Field.pm - Patch by Frédéric Buclin <LpSolit@gmail.com> r=mkanat a=justdave