Updated ARM targets to build with Ubuntu ARM gcc.

Signed-off-by: Simon Gerber <simon.gerber@inf.ethz.ch>

arm_molly: able to handle <=20 modules now.

arm_molly: able to handle <=20 modules now.

basic armv7-m support

added new hake architecture "armv7-m"
added armv7-m port of kernel and libbarrelfish
fixed small arm_molly issues with parsing paths containing '-'

the port does not actually handle interrupts yet, but scheduling, spawning, and starting processes works
this update does not yet contain the armv7-a code to start the m3 core

Fixed binary selection in build_data_files.sh.

Merge this with build fixes commit.

Build fixes for ARMv7.

Make choice about GCC binary. Fixed typos in usbconf mackerel file.
Remove MMU from kernel Hakefile because it is not needed.
Don't do stack protection (leads to compiler errors on newer versions).
Don't add build-id when linking on ARMv7. This screwed up ELF loading in our
kernel when it tried to load a section at 0x8000 -- which is not a valid
virtual address -- for the init binary. For some reason
stripping the section manually did not help.

Renamed arm_gem5 to armv7.

TODO:
* Figure out if the __GEM5__ define actually refers to gem5 or just to ARMv7.

Use arm-linux-gnueabi instead of arm-none-linux-gnueabi.

arm_molly: Fixed objdump command in build_data_files.sh

Rebuilt Hakefile for kernel to allow multiple CPU drivers

--HG--
rename : kernel/arch/arm_gem5/boot.S => kernel/arch/omap44xx/boot.S
rename : kernel/arch/arm_gem5/exceptions.S => kernel/arch/omap44xx/exceptions.S
rename : kernel/arch/arm_gem5/exn.c => kernel/arch/omap44xx/exn.c
rename : kernel/arch/arm_gem5/init.c => kernel/arch/omap44xx/init.c
rename : kernel/arch/arm_gem5/integrator.c => kernel/arch/omap44xx/integrator.c
rename : kernel/arch/arm_gem5/kludges.c => kernel/arch/omap44xx/kludges.c
rename : kernel/arch/arm_gem5/kputchar.c => kernel/arch/omap44xx/kputchar.c
rename : kernel/arch/arm_gem5/linker.lds.in => kernel/arch/omap44xx/linker.lds.in
rename : kernel/arch/arm_gem5/multiboot.c => kernel/arch/omap44xx/multiboot.c
rename : kernel/arch/arm_gem5/omap.c => kernel/arch/omap44xx/omap.c
rename : kernel/arch/arm_gem5/omap_uart.c => kernel/arch/omap44xx/omap_uart.c
rename : kernel/arch/arm_gem5/paging.c => kernel/arch/omap44xx/paging.c
rename : kernel/arch/arm_gem5/pl011_uart.c => kernel/arch/omap44xx/pl011_uart.c
rename : kernel/arch/arm_gem5/start_aps.c => kernel/arch/omap44xx/start_aps.c
rename : kernel/arch/arm_gem5/startup_arch.c => kernel/arch/omap44xx/startup_arch.c
rename : kernel/arch/arm_gem5/syscall.c => kernel/arch/omap44xx/syscall.c

Remove superfluous stuff. Debug page fault exception.

large part of arm gem5 port rewritten, now support multiboot bootloader and dynamic kernel relocation, added a loader for gem5 to mimick a multiboot bootloader