added multi_normal_prec_log
Slight speedup for inverse wishart.
Small performance tweaks on multi_student_t.
removing warning regarding unused tOld
removing some warnings from agrad/matrix.hpp
removed warnings from test generator
removed warnings from agrad/matrix.hpp
removed warnings from test/agrad/matrix_test.cpp
removed warnings from agrad/distributions/utility.hpp
removed warnings from math/matrix_test.cpp
removing warning from math/matrix.hpp
Merge branch 'remove_warnings'
had to reorder include order
removing warning from agrad/special_functions_test.cpp
updating web pages
updated references from google code to github
Merge branch 'update_to_github'
Merge pull request #1 from jrnold/fix-doc-multi-normal-prec

multi_normal_prec_log missing from the manual; added.
updated release notes for 1.1.1
rewriting typedef to not use typename