Fix build failure with "make macports"

The issue is that on Linux DLLs need not have all symbols resolved.
There is an option to do this on OSX, which I added to the macports
makefile rule.

Fixes issue #191
Merge branch 'feature/macbuild' into develop
update to latest polarssl
port to polarssl 1.3
Fixup makefile to handle submodule

Slight hack to invoke init.sh before evaluating any rules
Merge branch 'feature/polarssl-upgarde' into develop
Merge remote-tracking branch 'upstream/develop' into develop
update polarssl to 1.3.0 stable