Squashed commit of the following:

commit c44b37355295df2963daa724649ff1876b690488
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Wed Apr 27 00:33:12 2011 -0400

    decoder size fix

commit 78f864e9ddacd94d03d717d79a6e606712e25edd
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Tue Apr 26 23:26:14 2011 -0400

    Makefile fix

commit a0e884e463af88bcaa2f410ea8cc85e5bebd2c3b
Author: Jean-Marc Valin <jean-marc.valin@usherbrooke.ca>
Date:   Tue Apr 26 22:53:27 2011 -0400

    Making some progress

commit 9e30457f2199bba7b5e37bb577ff75dc85ba9306
Author: Koen Vos <koen.vos@skype.net>
Date:   Tue Apr 26 22:29:42 2011 -0400

    SILK update with stereo support