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

src/glue/arm/init.c

@@ -133,8 +133,8 @@ void start_vm()
 		"add	r0, pc, %0	\n"
 		/* Special symbol that is extracted and included in the loader.
 		 * Debuggers can break on it to load the virtual symbol table */
-		".global bkpt_phys_to_virt;\n"
-		"bkpt_phys_to_virt:\n"
+		".global break_virtual;\n"
+		"break_virtual:\n"
 		"mov	pc, r0		\n" /* (r0 has next instruction) */
 		:
 		: "r" (KERNEL_OFFSET)

src/glue/arm/memory.c

@@ -39,8 +39,8 @@ unsigned int space_flags_to_ptflags(unsigned int flags)
 	BUG(); return 0;
 }
 
-#define NUM_PMD_TABLES				6
-#define NUM_PGD_TABLES				8
+#define NUM_PMD_TABLES				7
+//#define NUM_PGD_TABLES				8
 
 /* Initial first level page table to provide startup mappings */
 SECTION(".kspace.pgd") pgd_table_t kspace;