A Library which provides simple application start and stopping.
The start method is _seL4_Start and is called before the application
begins and is maybe given as the startup routine to the linker/loader.
Hence it should never be directly called and thus has not header
definition.
The seL4_Stop method maybe called by an application to handler
failures or assertion so sel4/stop.h header is provided. This is
currently used by libsel4assert.