Build mcld linker for the device

- Add tools/mcld/Android.mk.  Build ld.mc for both the target and the
  host.
- Include missing, but needed, source files in lib/LD and lib/Script to
  relevant Makefiles.

Change-Id: If3f73d0e6c22251bcb9ad1c67dc9fd70f1dab5d3
4 files changed