Ignore the filename in "umd0:xxx"

Based on http://code.google.com/p/jpcsp/source/detail?r=2215
The change fix Bleach Soul Carnival 2 in jpcsp emulator
But there is another problem in PPSSPP
![1](https://cloud.githubusercontent.com/assets/2177532/3712526/49a1585c-151a-11e4-8b83-cbbb7dc262e3.jpg)
mark #875