malloc is carried from POSIX to libmem/malloc.

This malloc is a very simple first-fit sort of allocator. Now, it builds
without any problem but because we havent fixed include paths and added
it to the referenced libraries in the posix container yet, POSIX doesnt
build. So take it with caution.
(cherry picked from commit 65523743e86268eddd3bd2aab58476003f71c2c2)

SConstruct.userlibs

@@ -37,7 +37,7 @@ libc = SConscript('conts/libc/SConscript', \
                   duplicate = 0, variant_dir = \
                   join(BUILDDIR, os.path.relpath('conts/libc', PROJROOT)))
 
-libmm, libmc = SConscript('conts/libmem/SConscript', \
+libmm, libmc, libmalloc = SConscript('conts/libmem/SConscript', \
                          exports = { 'env' : env, 'arch' : arch, 'platform' : platform }, \
                          duplicate = 0, variant_dir = \
                          join(BUILDDIR, os.path.relpath('conts/libmem', PROJROOT)))
@@ -47,3 +47,4 @@ Alias('libl4', libl4)
 Alias('libc', libc)
 Alias('libmm', libmm)
 Alias('libmc', libmc)
+Alias('libmalloc', libmalloc)

conts/libmem/SConscript

@@ -28,7 +28,9 @@ env = Environment(CC = 'arm-none-linux-gnueabi-gcc',
 
 objmm = env.StaticObject(Glob('mm/*.c'))
 objmc = env.StaticObject(Glob('memcache/*.[cS]'))
+objmalloc = env.StaticObject(Glob('malloc/*.[cS]'))
 libmm = env.StaticLibrary('mm', objmm)
 libmc = env.StaticLibrary('mc', objmc)
+libmalloc = env.StaticLibrary('malloc', objmalloc)
 
-Return('libmm', 'libmc')
+Return('libmm', 'libmc', 'libmalloc')