Fixed an important bug of the umdemulator core, which is the cause of some games working with fastloader and not working with umdemulator/daxziso. Also, some other minor things.

Download link:
http://dax.psp-tuts.net

Changelog:

- 0.62. May, 18

* A bug originally from the UMDEMULATOR core has been found. UMDEMULATOR didn't handle the case where the string pointed by the parameter file (sceIoOpen, sceIoOpenAsync), or dev (sceIoDevctl) was not aligned to 4 bytes, causing an exception when that happened.
That caused incompatibility with some games (Coded Arms, Mahjong Fight and maybe others), and some homebrews (FileAssistant++, Irshell and maybe others).
Fixed. People, try again all the games that worked with fastloader and not with umdemu to see if they work now. Thanks a lot to the person who discovered the bug, well done!!

* Now daxziso prx's and default backgrounds are in ms0:/DAXZISO. Also, moved from newlib to pspsdk libc to reduce the size of the executable.

* Added an "experiment" to play games via usb in Direct Load, MPHGL Direct, and RUNUMD Direct modes.
This need files from psplink, which are not included. (you only need usbhostfs.prx in the psp part, and a driver and usbhostfs_pc in your computer, and edit the daxziso.ini file).