Changed the virt-to-phys debug breakpoint name to break_virtual

Changed l4id_t type to integer to recognise negative id values like L4_ANYTHREAD.
Added an extremely simple script that cleans and builds everything in right order.

Increased boot pmds by one:
This is due to the fact that if the 1MB initial allocation area of the kernel is
not 1MB-aligned, it is ought to be mapped from the middle of one MB to next,
which requires 2 pmds.

	modified:   .gdbinit
	modified:   README
	new file:   buildall.sh
	modified:   include/l4/arch/arm/types.h
	modified:   include/l4/generic/scheduler.h
	modified:   loader/kernel.S
	modified:   loader/main.c
	modified:   loader/mylink.lds
	modified:   loader/start.axf.S
	modified:   src/glue/arm/init.c
	modified:   src/glue/arm/memory.c
	modified:   tasks/fs0/src/bdev.c
	modified:   tasks/mm0/include/kdata.h
	modified:   tasks/mm0/include/vm_area.h
	modified:   tasks/mm0/src/init.c
	modified:   tasks/mm0/src/task.c
	modified:   tools/ksym_to_lds.py
	modified:   tools/l4-qemu

buildall.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+rm -rf build
+echo -e "\n--- Building kernel --- "
+scons configure
+scons build
+cd tasks
+echo -e "\n--- Building libraries --- "
+cd libmem
+scons
+cd ../libl4
+scons
+cd ../libposix
+scons
+echo -e "\n--- Building tasks --- "
+cd ../mm0
+scons
+cd ../fs0
+scons
+cd ../test0
+scons
+echo -e "\n--- Building bootdesc ---"
+cd ../bootdesc
+scons
+cd ../..
+echo -e "\n--- Packing all up ---"
+./packer.sh
+echo -e "\n--- Build Completed ---\n"