update patches and versions for devkitARM r42
add newlib 2.0.0 for devkitARM r42
disable scripts for push
latest libfat & dswifi versions
update devkitPPC to gcc 4.7.1 and gdb 7.4.1
move to gcc 4.7.2 & gdb 7.5.1
remove .orig from patches
disable scripts for push
build-devkit.sh: Allow autocompletion

Allow autocompletion of the devkitPro install path.
.gitignore: Ignore .bz2 and .gz archives
dksh4: Build binutils and gcc
.gitignore: Ignore .devkitSH4
dksh4: Get newlib to build
dksh4: Add some basic rules
dksh4: Build general tools
dksh4: Add dreamcast memory map and linker script
dksh4: Add a crt for dreamcast