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/olympus/e-500.toml

@@ -0,0 +1,13 @@
+make = "OLYMPUS IMAGING CORP."
+model = "E-500"
+clean_make = "Olympus"
+clean_model = "E-500"
+blackpoint = 63
+whitepoint = 3967
+color_pattern = "RGGB"
+active_area = [0, 0, 20, 0]
+crop_area = [18, 44, 78, 12]
+
+[cameras.color_matrix]
+A = [1.0858, -0.4915, 0.1151, -0.4315, 1.2355, 0.2188, -0.1239, 0.2963, 0.7051]
+D65 = [0.8136, -0.1968, -0.0299, -0.5481, 1.3742, 0.1871, -0.2556, 0.4205, 0.6631]