New version of the rom manager for PC.

Changelog:

- added: support for upcoming new xml datfile headers
- added: support for 4 new datfile header fields (date, email, url, homepage)
- added: support for new game/gamelist tags and cmpro's rebuildto/date tags
- misc: all datexports now use the xml format
- misc: engine.cfg's cachefile tag is obsolete. Every profile is cached now.
- misc: setinfo also shows romof and rebuildto information
- misc: rebuilder memory for no recompress is limited to 1/2 physical ram or 1GB max
- misc: some WINE related updates for non modal progress window
- fixed: /xml commandline parameter crashed when reading xml dats
- fixed: removing parent/clone relationship didn't set romof tag correctly
- fixed: red/green profile indicator is not reset when updating an exe based dat
- fixed: rebuilder remove source can accidently remove an empty backup folder
- fixed: scanner's automatic move to correct set failed in some cases

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