Proxy: Try to fix issue

See https://github.com/owncloud/mirall/commit/eb7074e9f088214648183a45c2ce806f65a8bf3c for discussion
Install include dirs app name aware.
1.5.3 final
Disable the folder if it is going to be removed.
Put ocsync to a private library - WIP
CMake: Ignore failure when working as submodule
Improve libowncloudsync

* Introduce TokenCredentials
* Introduce static compiling
* Have compile flags for smaller compile
CMake: Fix warning
CMake: Fix else
CMake: Do options one directory above

This fixes linking when keychain was not desired.
CMake: Fix target_link_libraries parameters
CSyncThread: Emit a signal for each file before propagate

This can be used to display info before the sync is happening
Merge remote-tracking branch 'origin/1.5'

Conflicts:
	CMakeLists.txt
	VERSION.cmake
	src/CMakeLists.txt