Merge pull request #537 from LebedevRI/colollect-geotagging

Collect images: allow collecting by geotagging
Get rid of a hard coded array size
Update French translation.
No need to handle tagxtag since we are using triggers.
No need to alloc them each time, let's use stack here + fix 2 big leaks
cleanup_pipe(): prevent potential double free by setting free()'d pointers to NULL
Cleanup cmsDeleteTransform() calls a bit
Add dt_ prefix to non-static histogram fucntions
usermanual: minor updates and additions
Merge pull request #524 from LebedevRI/usermanual

Usermanual: mention slideshow view and overwrite on export
usermanual: cleanup
usermanual: update on zone system module
usermanual: a few words on number of threads on a 64-bit system
usermanual: a few words on thumbnails and skulls
Add DT_DEV_PIXELPIPE_ANY
rawspeed: crop off garbage pixels for SONY ILCE-3000
rawspeed: SONY ILCE-5000 support
rawspeed: SONY ILCE-6000 support
adobe_coeff: SONY ILCE-5000 support
adobe_coeff: preliminary SONY ILCE-6000 support

While the sensor dimensions (and thus pixel size) are
different from the ILCE-3000/5000, Adobe claims the
same color matrix should apply. This sounds fishy.