Merge pull request #245 from jdolan/master

Stabilize BSP monitoring code
older glib compat fix
fix surface dialog closing up when typing in the texture box
wtf. better
updated OSX instructions
also, markup and stuff
rawwr
asdf
asdf
Use clang on OS X instead of gcc48

Also - add 'pkgconfig' to list of MacPorts to install, as it's a required dependency.
Merge pull request #255 from ericwa/clang

Use clang on OS X instead of gcc48