First commit in pruning.

I am removing support for all platforms in this fork, save for the Raspberry Pi. It is the only device which I am interested in developing this emulator for. By removing other platforms/devices, I will be able to focus on just the RPi. The project may see a name change to reflect this in the future as well.

Removed many preprocessor statements and blocks pertaining to the PSP, Pandora and GP2X. I recompiled and tested this. Everything still appears to function correctly.

Next will be to find out if the preprocessor statements mentioning ‘PC_BUILD’ are necessary.
Moved Makefile to example file.

The makefile for cross-compilation is now named Makefile-example. Please copy it
as Makefile and edit that to compile your builds. This will avoid the need to
edit the file everytime to point to your directories.
Re-indented code, more pruning.

Four spaces of indention with tabs is my preferred style of coding. I also performed some more pruning in the gui.c file. There is much more to be done there, though. The re-indenting of the code will have to take place before we can actually start making changes to the code lest there be merge conflicts everywhere.
Reindented a lot of code.
Removed Xcode files I accidentally added.
Merged branch 'pruning' for code reindenting.

Changes can easily be made on both branches and merge seamlessly without cause big merging conflicts.