removing example-models repository
removing all remaining references to policies
added using statement to test
Merge pull request #1147 from stan-dev/feature/issue-1105-remove-example-models-submodule

Fixes #1105. removing example-models repository
Move all the static variables used in the autodiff stack into a templated class.
Missing C++ includes to enable some tests to build on Linux.
Don't bother building libstan.a
Merge pull request #1150 from stan-dev/feature/kill_libstan

Fixes #1155. Remove libstan
removed commented line
Merge pull request #1148 from stan-dev/feature/issue-1122-remove-policy

Fixes #1148. Feature/issue 1122 remove policy
removes reference to libstan
Merge pull request #1159 from stan-dev/feature/issue-1158-remove-libstan

Fixes #1158. removes reference to libstan
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
Merge branch 'develop' of https://github.com/stan-dev/stan into feature/issue-970-mix-fun
Merge branch 'develop' into feature/issue-970-mix-fun