Read callbacks now need a default return value supplied at construction.
Replaced isnull() with isunset() which tells you if the callback wasn't
configured rather than whether it isn't safe to call.
Enabled validation of device callbacks (it seems it was disabled at some
point, probably accidentally).
Device callbacks and object finders now implement the same interface for
resolution.
- Add more or less complete implementations of sis630_host, sis950_lpc, sis630_gui, sis5513_ide, sis7001_usb, sis7018_audio, sis900_eth devices;
- Removed gamecstl.cpp in favour to the new sis630.cpp driver;
- i386.cpp: enable CMOV feature for Pentium III and 4;
- i386.cpp: add PSN stub feature for Pentium III;
New machines marked as NOT_WORKING
----------------------------------
Shuttle MS-11 [Angelo Salese, archive.org]
