Only match on MAXXUM/DYNAX/ALPHA to avoid trampling on other cameras
quick fix for #9949

this prevents a segmentation violation in the sharpen module for small images.
for #9949 this is only a fix of a symptom. the underlying root cause of that bug is
in the clipping module which does not take care that the clipping area needs to
lie within the image frame and should not have a width/height of zero
basecurve tool: fix PPM header reading code for PPMs generated by recent imagemagick
basecurve tool: optimize a bit making the 8bit/16bit to float only once
basecurve tool: rename some vars
basecurve tool: tentatively support orientation in helper script
basecurve tool: update README
basecurve tool: massive refactor of the helper script

- refactored the helper script. It is now also usefull for non
  Nikon/Canon raw files as long as it given the JPEG file as
  argument too.
- added support for the -s option in the helper script as well
- updated accordingly the README file
Merge pull request #562 from edgomez/dt_curve_tool_fix

basecurve tool: fixes and improvements
Refine the Konica Minolta name munging
This should catch all cases. I've tested this on the 5D/7D DSLRs and DiMAGE 7/7i/7Hi/A1/A2
Add the adobe coeffients for the DiMAGE 7i
Before it was using the ones from the 7 instead (they are similar)
grain: prevent crash on very small images
catch NaNs in waveform histogram creation
nlmeans/denoiseprofile: prevent system hanging with very small input images
rawspeed: Samsung NX 2nd gen centered cropboxes

it seems unlike the 1st gen and 2.5nd gen, the 2nd gen Samsung NX
sensors do not leave room for a 3:2 cropbox properly centered without
hitting garbage pixels beyond the vendor defined resolution.
prevent some lighttable glitches in case of very small input images

still no thumbnail displayed for images with sizes up to 8x8
rawspeed: pull develop branch from github instead
Don't put too much Iptc data into tags

No idea why I added that loop back then. If this commit breaks something
we have to look deeper into it.
Italian translation updated
Merge pull request #564 from bartokk/master

Italian translation updated