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/d5100.toml

@@ -0,0 +1,16 @@
+make = "NIKON CORPORATION"
+model = "NIKON D5100"
+clean_make = "Nikon"
+clean_model = "D5100"
+color_pattern = "RGGB"
+active_area = [0, 0, 44, 0]
+crop_area = [8, 8, 56, 8]
+
+[cameras.color_matrix]
+A = [0.8642, -0.3058, -0.0243, -0.3999, 1.1033, 0.3422, -0.0453, 0.1099, 0.7814]
+D65 = [0.8198, -0.2239, -0.0724, -0.4871, 1.2389, 0.2798, -0.1043, 0.205, 0.7181]
+
+[[cameras.modes]]
+mode = "14bit"
+blackpoint = 0
+whitepoint = 15892