Just what version of C++ does the linux buildbot use, anyway.

Fix last commit

forgot a line

More linux fixes

Try to fix another linux compile error

try to fix weird gcc compile error

Sculpt: more brush stuff

Disable a static assert on gcc.

add missing files

Sculpt: Finish color support for brush channels

* BRUSH_CHANNEL_VEC3/4 are now implemented
* New flag BRUSH_CHANNEL_COLOR
* Also tried to sculpt's usage of wm.radial_control in keymaps

Sculpt: More brush engine stuff, got automasking to work with it

* Sculpt now has an API to get brush channel settings.
If a sculpt cache exists it will use the channels there
(ss->cache->channels_final), otherwise it pulls them
from a brush and Sculpt toolsettings. Exampes:

float f = SCULPT_get_float(ss, "setting", sd, brush);
itn i = SCULPT_get_int(ss, "setting", sd, brush);

* Improved the UI a bit

Fix small crash in last commit and a few typos

Sculpt: add missing files

Fix problem in last commit

Sculpt: More brush channel stuff

* The input device curves for brush channels
now use a copy on write mechanism.
+ It's based on a global cache of curves.
The alternative is to reference count
BrushChannels, which I also implemented
then abandoned.
+ Profiling showed that copying CurveMapping
instances was actually a problem.

* Lots of small fixes to the old<-> new brush setting
conversion code;

* Brush commands can now, sortof, have individual
spacing. The default brush spacing still acts
as a minimum though.

* Added a BLI_ghash_lookup_p_ex method that
returns the key ptr inside the ghash (it
returns the actual key, not a pointer to
Entry.key).
* Added a general 1d CurveMapping preset operator
that uses an RNA path to get the curve.

Sculpt: Brush channels names are now lower-case instead
of upper case.

Sculpt: brush engine stuff

BrushChannels are now stored in linked lists
instead of simple arrays. This helps to
avoid memory corruption.

I had originally wanted to be able to pass
BrushChannels by value, but that doesn't really
work since they heap allocd data (the input
mapping curves).

commit prior to small refactor

Sculpt: more brush engine stuff; do not test.

Pushing this commit early due to computer
weirdness

Sculpt: flushed out brush channel RNA and made basic UI