pipeline: don't use near/far symbols
pipeline: don't use near/far symbols

According to 9cc90333473e3 the windows headers #define near as nothing,
and presumable the same is true for 'far' too. Apparently this define is
to improve compatibility with code written for Windows 3.1, so it's good
that people will be able to incorporate such code into their Clutter
applications.

djdeath/cogl,spatulasnout/cogl,gcampax/cogl,Distrotech/cogl,gcampax/cogl,gcampax/cogl,djdeath/cogl,collects/cogl,spatulasnout/cogl,gcampax/cogl,djdeath/cogl-android,djdeath/cogl-android,Distrotech/cogl,djdeath/cogl-android,Distrotech/cogl,Distrotech/cogl,collects/cogl,djdeath/cogl