Changes between 16 March 2010 - 6 April 2010

Mutex system call fixed for multiple contenders
Userspace irq support extended to keyboard/mouse.
Scheduler modified for real-time irq tasks

SConstruct.userlibs

@@ -24,7 +24,7 @@ env = Environment(CC = config.toolchain_userspace + 'gcc',
                   CCFLAGS = ['-g', '-nostdlib', '-ffreestanding', '-std=gnu99', '-Wall',
                              '-Werror', '-march=' + gcc_arch_flag],
                   LINKFLAGS = ['-nostdlib'],
-                  ASFLAGS = ['-D__ASSEMBLY__'],
+                  ASFLAGS = ['-D__ASSEMBLY__', '-march=' + gcc_arch_flag],
                   ENV = {'PATH' : os.environ['PATH']},	# Inherit shell path
                   LIBS = 'gcc',				# libgcc.a - This is required for division routines.
                   CPPPATH = "#include",