* remove featurebuild patch
see:
3d8f71c4d242c36f48ed
* remove external fmt patch
see:
53e1c9ab11/CMakeLists.txt (L183-L184)
* remove target fixup branching
see:
4858d7e454
* convert control file to manifest file
* remove android build patch
see:
e86f450428
* update to 1.8.3
* remove redundant cleanup
these folders don't exist in the build tree, and so they don't need to be cleaned up
* update deprecated functions
* remove empty folder
* add version
* report version using semantic versioning
* correct version comment
* update version file
* fixup pkgconfig
* update version file again
* accomodate non-cmake users
* update to 1.8.5
* update version files
* remove 1.8.3 from version file