header (C) fixes
better assertion.
Doxygen, comment typos.
VMM: don't use generic IPE status codes, use specific ones. Part 1.
VMM,Main: Added VMM thread init and term notifications so that Main can make sure COM is uninitialized. (Maybe we should just say IPRT cleans up COM?)
VMM reorg: Moving the public include files from include/VBox to include/VBox/vmm.
VMM source reorg.