Add the MOF compiler stub from Wine to satisfy Office 2010 last installation step

The last installation step of Office 2010 ("InstallFinalize") attempts to install, via a substep "InstallOSppMof.x86", MOF files[1,2] by calling the MOF compiler mofcomp.exe [3] that should be natively present on (Windows XP/Server 2003 and) ReactOS, but doesn't find it, and therefore fails. This makes the Office 2010 installation fail at the very last step, indicated by the following debug traces:

trace:(H:\trunk\reactos_clean\dll\win32\msi\custom.c:620):msi:DllThread custom action (380) returned 1603

err:(H:\trunk\reactos_clean\dll\win32\msi\action.c:521):msi:ITERATE_Actions Action: L"InstallFinalize" finished with error code 1603

err:(H:\trunk\reactos_clean\dll\win32\msi\action.c:532):msi:ITERATE_Actions Execution halted, action L"InstallFinalize" returned 1603

The "fix" is therefore to import the MOF compiler stub from Wine to satisfy Office 2010 installation.

[1]: "Managed Object Format (MOF)", https://msdn.microsoft.com/en-us/library/aa823192(v=vs.85).aspx
[2]: "Using MOF Files", https://technet.microsoft.com/en-us/library/cc180827.aspx
[3]: "mofcomp", https://msdn.microsoft.com/en-us/library/aa392389(v=vs.85).aspx