This is just a set of OS dependant functionality needed by the
emulator OpenGL host renderer. It currently has implementation for
Linux and Windows only.
osDynLibrary - dlopen/dlsym abstraction
osProcess - interface to launch a new process, wait and kill it.
osThread - abstraction interface for creating a thread.
Change-Id: Ib0264592d8c87e865da87acf5c94e2b331801ca4
