Reorganizing into library project
android: adapted build for library project

- use manifestmerger.enabled to merge library manifest
- updated intent/activities to be implicit
Merge remote-tracking branch 'upstream/master' into androidlib
libwinpr-sspi: complete Schannel handshake
Merge branch 'master' of github.com:awakecoding/FreeRDP
libwinpr-sspi: implement partial Schannel EncryptMessage/DecryptMessage support
channels/rdpsnd/alsa: apply patch from tonyhook
channels/rdpsnd: added sound format ids
xfreerdp: add async-channels command-line argument
Merge pull request #986 from C-o-r-E/master

Server improvements on OS X and Windows
channels/rdpsnd: refactoring
libwinpr-utils: fix parsing of optional arguments with the space separator
Merge branch 'master' of github.com:FreeRDP/FreeRDP
channels/drive: fix warning
build/arm: added build option to specify fp ABI

cmake option ARM_FP_ABI allows to specify the floating point ABI to use.
If ARM_FP_ABI isn't set explicitly softfp is used.

fixes #980
Merge pull request #987 from bmiklautz/fpu_type

build/arm: added build option to specify fp ABI
channels/rdpsnd: fix timestamps
channels/rdpsnd: use MessageQueue
Various fixes and reorganisation of files for Android library project
New optimized NEON yCbCr to RGB conversion