Merge pull request #1 from mgage/master

PGalias.pm is now in reasonable shape
Merge remote-tracking branch 'gpg/master'
Removed extra file and testing
Merge pull request #7 from mgage/master

disentangle the various features for branches 2.5.1 , 2.5.2 and 2.5.3
update dates for copyright and url for github
update version to 2.5.*
Merge pull request #6 from openwebwork/pg2.5.1

Pg2.5.1
Merge branch 'master' of http://github.com/openwebwork/pg
Fix bugs #2043 and #2421
Remove obsolete comments about createPGtext which no longer exists.
Use &$PREPROCESS_CODE to process strings in includePGtext

This was originally added in July 15, 2012 but was subsequently removed.
This also removes references to includePGtext in Translator.pm where it does not belong.
The only location for includePGtext is in  PG/IO.pm.  It is referred to from PGcore.
The reference to includePGtext in PG.pl for the includePGproblem macro now references the PGcore version.
Merge pull request #5 from mgage/pg2.5.1

Pg2.5.1
Merge pull request #9 from mgage/pg2.5.1

Pg2.5.1
Merge branch 'hotfix-2012-09-07' of https://github.com/djun-kim/pg-dev into merge_djun

Conflicts:
	lib/WeBWorK/PG/IO.pm
Fix errors associated with bHTML and the unionTables.pl file
Merge pull request #10 from mgage/pg2.5.1

update to pg2.5.1
Merge pull request #6 from mgage/pg2.5.1

update to pg2.5.1
Merge pull request #11 from mgage/master

update pg
Merge branch 'master' of https://github.com/openwebwork/pg-dev into ww2.5.1.1
Made PGAnswermacros fix recorded_score if recorded_score is undefined.
Merge pull request #12 from goehle/master

Fixed uninitialized score variable