Blender Git Loki

Some code cleanups:

* editaction.c - merged the functions for channel properties (renaming, slider limits, protect/mute, etc.)

* blenlib
- added a new function BLI_findindex which finds the index position of a given item in a list. It will return -1 if it can't find the item
- tidied up code formatting so that (the bits I have checked) have a single formatting style instead of a few different ones
- added a few paranoia checks for NULL in one of the listbase-related functions
- removed some half-dutch variable names still lurking around
- culled a few compiler warnings... there are still two in util.c related to (const char *) and (char *) type things