Vendor rawler 0.7.2 unmodified

The crate as crates.io publishes it, minus .cargo-ok, its Cargo.lock and
data/testdata (13 MB of sample files only its own tests read). Not yet
routed through [patch.crates-io]; the next commit is the patch.

third_party/rawler-0.7.2/data/cameras/nikon/d3100.toml

@@ -0,0 +1,16 @@
+make = "NIKON CORPORATION"
+model = "NIKON D3100"
+clean_make = "Nikon"
+clean_model = "D3100"
+color_pattern = "GBRG"
+active_area = [6, 0, 22, 0]
+crop_area = [24, 6, 40, 6]
+
+[cameras.color_matrix]
+A = [0.8306, -0.282, -0.041, -0.455, 1.1949, 0.2955, -0.0675, 0.1472, 0.8632]
+D65 = [0.7911, -0.2167, -0.0813, -0.5327, 1.315, 0.2408, -0.1288, 0.2483, 0.7968]
+
+[[cameras.modes]]
+mode = "12bit"
+blackpoint = 0
+whitepoint = 3880