Patch port audio configure script

Patch from here: https://www.assembla.com/spaces/portaudio/tickets/216#/activity/ticket
Modify port audio to make it build on OS X 10.9
Add autom4ate.cache, aclocal.m4 and compile (generated files) to .gitignore recursively for libIntegra
Add more portaudio generated files to .gitignore
Add Xcode "user files" to .gitignore
Merge branch 'development' of https://github.com/BirminghamConservatoire/IntegraLive into development