IPRT,Drivers: Committed a modified version of the diff_linux_guest_host patch. This mangles the IPRT symbols in kernel space on linux and later other platforms.

VMM reorg: Moving the public include files from include/VBox to include/VBox/vmm.

FreeBSD: build fixes (thanks to Bernhard Froehlich)

iprt/asm*.h: split out asm-math.h, don't include asm-*.h from asm.h, don't include asm.h from sup.h. Fixed a couple file headers.

files_*: iprt/asm-amd64-x86.h

HostDrivers/FreeBSD: Build fixes

iprt/assert.h: Added RTAssertMsg2Add[Weak][V] for dumping the lock deadlock chain and stacks. Added the missing internal/assert.h file to the linux and freebsd kernel source trees.

HostDrivers/FreeBSD: Use the same method to build the kernel drivers as Linux. To build the kernel drivers go into out/freebsd.{amd64,x86}/{release,debug}/bin/src after the build and execute make. make load will load the kernel drivers. The old way is only used for syntax checking and the resulting modules may not even load anymore.