Remove TARGET_PC and cruft from typedefs.h.

Additionally remove all TARGET defines (e.g. TARGET_MAC), which weren't used anyway.

BUG=
TEST=build on Linux, Mac, Win

Review URL: https://webrtc-codereview.appspot.com/432001

git-svn-id: http://webrtc.googlecode.com/svn/trunk@1822 4adac7df-926f-26a2-2b94-8c16560cd09d
4 files changed