r1270
usability improvements

r1269
fixed callbacks in interpreter mode

r1268
added more sysmem support

r1267
changed the way title.txt is read to match the way icons are read

r1266
Forgot this in r1265

r1265
Implemented signal handling in GE commands: SIGNAL command, sceGeContinue. This might reveal graphics in some games (e.g. when displaying "END without FINISH" or "Unsupported sceGeContinue"). Avoid displaying "Unknown/unimplemented video command [0xFF]" before BOFS command.

r1264
Fixed read64 (spotted by i30817).

r1263
Fixed sceKernelUSec2SysClockWide (reported by i30817). Added fake return value to sceKernelReferLwMutexStatusByID.

r1262
Better checks for ringbuffer being null (reported by i30817)