kernel: WriteCombine flag for VirtualAddressSpace (uses PAT on x86)
machine: provide a means for enabling write-through or write-combine strategies on PCI BARs at mapping time.
drivers: vbe and vmware framebuffers are now both mapped with the WriteCombine flag.
x86: don't accidentally set the 4 MB page flag in a page directory entry for a region with pages that have write-combining
x86: horrible and bad hack to write the PAT MSR
vfs: yield if any thread (as opposed to only the running one) received an event in File::dataChanged
init: no longer doing unix socket client/server testing, remove the related code