Wrapping the SHLINKFLAGS in an array rather than as a single string
caused the link flags to be passed to clang double quoted. This cuased
clang to interpret the flags as a string rather than as a flag which
caused the -install_name flag to never be passed to the linker.

Fixes for packageconfig

Remove hammer from the include path to not look in
{prefix}/include/hammer for hammer/*.h.

Don't default the prefix to /usr

Install target for Python

Now with a proper install target!

distutils being invoked from scons; ld is failing with 'libhammer.a: archive has no index, run ranlib to add one'

Python bindings

Python bindings

Python 2.6 is unsupported because the PyCapsule API was backported from Python 3 to 2.7. Trying Python 3.3 and 3.2 just for grins.

Conflicts:
	src/bindings/python/SConscript
	src/bindings/python/hammer_tests.py
	src/bindings/swig/hammer.i
	src/hammer.h
	src/parsers/choice.c
	src/parsers/sequence.c

Conflicts:
	src/bindings/python/SConscript
	src/bindings/python/hammer_tests.py
	src/bindings/swig/hammer.i
	src/hammer.h

Cleaned up python bindings interface a bit; now returns strings rather than character codes if appropriate

kindasorta working. all tests (except h_action and h_attr_bool, need typemaps) have passed at one time or another, but some segfault at not-quite-random; h_and, h_epsilon_p, h_end_p, h_ignore, h_not, maybe h_choice seem culprity.

h_sequence, h_choice and HCountedSequence are all having weird issues, but tests are in a workable format now