basecurve: add logarithmic scale.
basecurve: fixed a bug in loglogscale drawing.
libraw: additional data checks backported from 0.15.4 (from lexa)
fuji: delete FinePix to match color matrices data.

don't you just love fuji.
add noise profile for the Pentax K20D
avoid I/O deadlocks between DT and GDB in SIGSEGV handler
Minor code clean-up, found while reading code.
appdata: initial appdata support

according to:
http://people.freedesktop.org/~hughsient/appdata/

syntax validated with the relaxng schema