Implementation BaseDir in Free Desktop Standards for C++

 This project was started to fulfill the need of a reliable
 implementations of such standards in the AppImage project.
 It is totally standalone and only depends on
 the standard c++ library (stdlib).
 .
 It has been split in different modules according to the
 Free Desktop Standards, the current implemented ones are:
    - Desktop Entry 1.2 (mostly complete)
    - Base Dir 0.7 (draft)
 .
 This is the library files for BaseDir.