updating makefile dependencies to correctly update stanc through a generated c++ file
Merge branch 'develop' of https://github.com/stan-dev/stan into bugfix/issue-1177-keyword-var
Merge pull request #1178 from stan-dev/feature/issue-1108-makefile-stanc

Updated makefile dependencies for auto-generated cpp files
Fixes #1108
Merge branch 'develop' of https://github.com/stan-dev/stan into bugfix/issue-1177-keyword-var
fix #1177, allow variables with prefixes matching keywords
added acknowledgement for fun-var-constraints
Merge branch 'develop' of https://github.com/stan-dev/stan into bugfix/issue-1151-fun-var-constraints
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
Merge branch 'develop' of https://github.com/stan-dev/stan into bugfix/issue-1151-fun-var-constraints
pushed ostream* through to variable constraints, resolving #1151
Merge pull request #1182 from stan-dev/bugfix/issue-1177-keyword-var

Bugfix/issue 1177 keyword var
Merge branch 'develop' of https://github.com/stan-dev/stan into bugfix/issue-1151-fun-var-constraints
fixed mock model to use new 3-arg constraint
Merge pull request #1183 from stan-dev/bugfix/issue-1151-fun-var-constraints

Fixes #1151. Bugfix/issue 1151 fun var constraints
Merge branch 'develop' of https://github.com/stan-dev/stan into feature/issue-596-autodiff-paper
functionals to agrad-rev paper plus bib items