Cleanup: pep8
Text Editor: reload missed adding new-line

Logic for load/reload was duplicated, Fix T28087 missed reload.

De-duplicate, also replace stat -> BLI_stat
Fix T41761, muting not working with texture nodes

This was disabled to fix T41349, however seems that if we don't pass
delegates for muted nodes everything work fine.
OSX/cmake: OSX 10.10 must be used with cmake 3.0.0 minimum, older thinks 10.6 is higher than 10.10 :)
Cleanup: style, spelling
Fix T41861: Loopcut wire incorrect mode-switch

also didn't preview or select correctly.
Fix for edge-order flipping on subdividing wire

Extruding a subdivided edge would create flipped faces.
Fix T41862: Autosmooth & multi-material glitch
Cleanup: set var static
Cleanup: de-duplicate text select logic
Cleanup: bool
Cleanup: use float versions of functions when in/output are floats
Cleanup: use const for read-only arrays