highlights: be less aggressive.

works fine for my single test shot. more testing would be great (+opencl version pending)
update OSX packaging instructions with changes in new macports release (2.2.0)
Help a bit SQlite to optimize the query.

The suggestion is quite slow (0.30s) when a lot of tags are present.
This optimization help gaining 0.07s which is still noticeable. But
more is needed to get a fluid UI when entering a keywords.
Order suggestion descending on the actual count.

The order on id does not help at all the user.
brush masks: rendering fixes

better handling of abrupt opacity and hardness changes in the course
brush strokes
Remove non existing command

darktable-faster has been removed for a long time, but the man page was
not updated. This has been corrected.

Signed-off-by: madanyang <toganm@opensuse.org>
Merge pull request #306 from madanyang/master

Remove non existing command darktable-faster from man page
Update French translation.
wb_presets: nikon 1 j3
brush masks: speed up rendering

this gives a factor of 2-3; finally rendering speed is still not too
impressive...
rawspeed: imported upstream r573 (thanks klaus)
noise profile: update gen-profile script to overwrite export settings.
Merge branch 'master' into highlights
highlights: are still broken.
highlights: this doesn't seem half bad. needs testing.
utility: getpwnam_r availibility ifdef for OpenBSD
Merge branch 'highlights'

at least this is better than what master currently has (which just
destroys your highlights and a little more if you switch on reconstruction).

i declare it as a bugfix that doesn't need to preserve the broken behaviour
for old images (tell me if you need it back for some reason)
noise profile: nikon d3200 by Aurelien Deharbe
noise profile: samsung nx10
Updated Czech translation