[darwin] Add CDarwinUtils::GetManufacturer() for getting real manufacturer name (for example on VMware it returns “VMware, Inc.”)
[darwin] SysInfo::GetManufacturerName(): return real manufacturer name instead of hardcoded
[posix] [vfs] Implement PosixFile class for accessing local files on Posix platforms
[posix] [vfs] Switch to new PosixFile
[vfs] Remove HDFile
Merge pull request #5309 from Karlson2k/vfs_posixfile_01

[posix] Implement new PosixFile
[omx] Fix compile warning.

This fixes commit 77778e4e1ef549455574f765ff6252fbb278effa.
Merge pull request #5452 from anaconda/fix-pr5348

[omx] Fix compile warning after PR 5348.
Merge pull request #5356 from Karlson2k/osx_manuf_id_01

[darwin] Add real manufacturer name detection
Merge remote-tracking branch 'upstream-ro/master'