rather than PKG_FAIL_REASON, so that they provide useful error
messages in build logs, and so that they continue to work on platforms
where they aren't broken.
- support statvfs change of NetBSD
- implement SuspendThread() and ResumeThread()
- introduce a simple debugger
- IsProcessorFeaturePresent(): implement PF_XMMI64_INSTRUCTIONS_AVAILABLE
and PF_FLOATING_POINT_PRECISION_ERRATA
- Some HCURSOR-related functions are implemented.
- improve Virtual*() functions support
- SEH support for SIGFPE and SIGSEGV
- debug messages are printed via stderr, not stdout
- fix a problem of CreateDIBitmap()
- implement GetPaletteEntries()
- implement GetDIBColorTable() and SetDIBColorTable()
- implement Heap*() functions
- make kernel object handles indexes in the handle table instead
of addresses of memory block.
- improve Event/Mutex/Semaphore implementation
