chrome denoise: add wavelet denoising core to profiled denoising module.

together with a switch between that and nlmeans.
wavelets seem to be a lot more effective against low frequency
color noise. i get very nice results using blend mode `color' for
wavelets along with a second instance using `lightness' blend mode
with nlmeans.

not sure we want to go that way, just using an additional chroma denoise
in the equalizer might work the same.
gen-profile: Read "Exif.Nikon3.*" before "Exif.NikonIi"

1. "Exif.NikonIi.*" are bytes, not even shorts, so they're smaller than
   other keys.

2. That looks like versionned nodes: "Nikon2" vs. "Nikon3".
gen-profile: Add a get_exif_key() function to subr.sh

It avoids to copy exiv2 command line all over the place.
Swedish update
Merge pull request #145 from levitte/swedish-translation

Swedish update
wb_presets: SONY SLT-A57
Not needed
Update pt_BR tranlation
enable NaN checks also for modules that are processed on GPU

that's only for debugging purposes and makes processing really slow
noise profile: sony a55v by Jean-Marc Sarat
Fix possible crash. I hope.
noise profile: corrected olympus maker to be exact match.
noise profile: graph2 now with labels on the axes.
noise profile: graph2 parses only uncommented profiles and is posix sh compliant
Merge branch 'chroma-denoise'
noise profile: merged wavelet mode, no opencl for now.
noise profile: d7100 by GomGom
noise profile: panasonic g3 by thouks
Merge pull request #146 from guitorri/translate_pt_BR

Update pt_BR tranlation by guitorri. Thanks
Create styles from lightable mode.

This may be handy and it avoid switching to darkroom just for this.