* Don't try to embed manifest (it causes build to fail because it's
specified in win_resource.rc).
* Fix curl include path.
* Compile sys_autoupdater.c.
* Make quake3 debug link to msvcrtd.lib instead of msvcrt.lib to fix
unresolved external symbol __imp___CrtDbgReportW.
* Fix q3_ui dll output directory.
* Fix opus path filter.
* Use UseOfMfc false and CharacterSet NotSet.
* Fix header paths and remove non-existent files.