Bug 724949 - Server side (PHP) search broke in 1.8.3
Added dir tree nodes to the context
Unified DirFileContext and NestingContext
Added directory info to the context
Extension specific filtering
Bug 625601 - FORTRAN: recognition free versus fixed formatted code

The recognition of the type (free or fixed) of Fortran code is not reliable possible. A well known possibility as used with compilers as well is to specify the type of code by means of the extension.
With EXTENSION_MAPPING it is possible to select the type of Fortran code, when not explicitly set doxygen tries to guess the type of Fortran code.
Added reference counting for all context objects
Merge branch 'master' of github.com:doxygen/doxygen
Merge branch 'feature/bug_625601' of https://github.com/albert-github/doxygen into albert-github-feature/bug_625601
Some restructuring and some compiler warning fixes
Merge branch 'master' of github.com:doxygen/doxygen
Fixed compiler warnings in section.h