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-620.toml

@@ -0,0 +1,13 @@
+make = "OLYMPUS IMAGING CORP."
+model = "E-620"
+clean_make = "Olympus"
+clean_model = "E-620"
+#blackpoint = 65
+whitepoint = 4015
+color_pattern = "BGGR"
+active_area = [0, 0, 4, 0]
+crop_area = [30, 28, 38, 32]
+
+[cameras.color_matrix]
+A = [0.8857, -0.28, -0.0553, -0.6587, 1.4222, 0.2581, -0.1089, 0.1743, 0.817]
+D65 = [0.8453, -0.2198, -0.1092, -0.7609, 1.5681, 0.2008, -0.1725, 0.2337, 0.7824]