[Fluxus] 0.14b1 on macos

[nik gaffney]

> distinguishing macos versions could be done in scons using:
> 
> if env['PLATFORM'] == 'darwin':
>     from platform import mac_ver
>     macos_version = mac_ver()[0].split('.')
>     env.Append(CCFLAGS = ['-DMACOS_MAJOR_VERSION=' + macos_version[0],
>                         '-DMACOS_MINOR_VERSION=' + macos_version[1]])
> 
> 
> we could use MACOS_MAJOR_VERSION and MACOS_MINOR_VERSION in
> PolyGlyph.cpp to switch between the gluTessCallback calls. these should
> be 10 and 4 on tiger and 10 and 5 on leopard. what do you think?

i had a quick look around but haven't found a 'correct' way of 
deteriming the osx version at complie time. perhaps using 
AvailabilityMacros.h might provide a more foolproof mechanism.


nik