remove test dependency on compiling grammars
moved location of static pattern rule to after GRAMMAR_TESTS were defined
Merge pull request #505 from stan-dev/feature/issue-493-remove-test-dependency-on-compiling-grammars

fixes #493. remove test dependency on compiling grammars
Merge branch 'develop' of https://github.com/stan-dev/stan into feature/parser_error_reporting