Fixed sceUtilityOsk: avoid buffer overflow when writing input text back.

git-svn-id: http://jpcsp.googlecode.com/svn/trunk@3230 4ab978e6-3352-0410-996c-0b42db0051c8
Basic implementation of sceIoAssign and sceIoUnassign.

git-svn-id: http://jpcsp.googlecode.com/svn/trunk@3231 4ab978e6-3352-0410-996c-0b42db0051c8
Fixed the return code of a thread exiting by simply returning from its main function.
Code clean-up.

git-svn-id: http://jpcsp.googlecode.com/svn/trunk@3232 4ab978e6-3352-0410-996c-0b42db0051c8