Update to version 2.8
Fix parserAssignment TeX output to use TeX rather than string for its value (typo from copying and pasting).
Fix Value::Matrix decompose_LR to return a Value::Matrix, not MatrixReal1. Fix solve_LR to call correct routine to get wwMatrixLR (it was renamed and still had the old name).
Merge pull request #43 from dpvc/bugfix/2.8-mathobject-fixes

Bugfix/2.8 mathobject fixes
Update PGessaymacros.pl
Allow errors when checking the adapted values (so we get the message about not being able to generate enout points, for example).  This resolves bug 2776.
Fix relative error check with adaptive parameters (resolved bug 2784)
Merge pull request #54 from dpvc/bugfix/2.8-FormulaUpToConstant

Bugfix/2.8 formula up to constant
Merge pull request #55 from dpvc/bugfix/2.8-adaptive-params

Bugfix/2.8 adaptive params
Fixed a bug where using mutiple essay questions and a radio button question caused an error.
Merge branch 'develop' of http://github.com/openwebwork/pg into essayraio

Conflicts:
	macros/PGessaymacros.pl
Merge pull request #59 from goehle/essayraio

Essays and Radios
Fixed a (unreported) bug where some unrendered math formulas didn't display
well in Essay questions.
Merge branch 'develop' of http://github.com/openwebwork/pg into essayencode
Added text2PG (which was a union macro) to the main macros folder
because its used by PGessaymacros now.
Fixed assiciated bug in EV3P having to do with backslashes.
Merge branch 'develop' of https://github.com/openwebwork/pg into develop
Merge pull request #60 from goehle/essayencode

Essay encode
Merge branch 'develop' of https://github.com/openwebwork/pg into develop
Restore Davide's identification of macro fileswhen reporting errors.