Update unionTables and unionLists to not use the obsolete LaTeX2HTML mode (removes references to eHTML and bHTML, so resolves #2043 and #2421)
Remove unneeded x permissions from three macro files
Merge pull request #22 from dpvc/unionTables

Update unionTables and unionLists to not use LaTeX2HTML mode
Merge pull request #23 from dpvc/permissions

Remove unneeded x permissions from three macro files
Update contextArbitraryString to handle multi-line input, and to properly output all characters in student answers
Merge pull request #24 from dpvc/ArbitraryString

Update contextArbitraryString to handle multi-line input
Merge pull request #26 from mgage/master

update pg2.5.1  from mgage/pg-dev master
Merge pull request #27 from mgage/master

Pg2.5.1 update
Merge pull request #28 from mgage/master

Reapply a corrected version of the fix
Merge pull request #29 from mgage/master

Revisions responding to suggestions by DPVC
Merge pull request #30 from mgage/master

recent upgrades to pg
Fix erroneous use of checkOpOrder (though I think all classes override this)
Add blank files for LimitedPolynomail and Inequalities so that pg can be updated without having to update webwork2.  These canbe removed later after people have updated webwork2.
Merge pull request #33 from dpvc/pg-lib

A few fixes for pg
New macro file for parametric planes in 3D
Merge pull request #34 from dpvc/ParametricPlane

New macro file for parametric planes in 3D
Update macros/PG.pl

missing comma caused compile errors
Merge pull request #32 from mgage/master

allow knowls to be used to display hints and solutions
Replace double quotes with single quotes  as they are sent to the knowls.  This is a temporary fix and needs to be replaced with something more robust -- possibly a general escape URL routine.  At least I don't know that this will work with text that contains mixed double and single quotes.
Merge pull request #35 from mgage/pg2.5.1

Replace double quotes with single quotes  as they are sent to the knowls...