Changed mutex API to static allocation.
Added mutex implementation for uCOS-III.
Added missing include & fix for compiler warning
Implement static allocation of mock mutexes
Fix documentation
Added mutex source to package file.
Merge pull request #35 from nuft/ucos-iii-mutex-impl

uCOS-III mutex implementation
Merge branch 'master' into ucos-iii-threading-impl

Conflicts:
	package.yml