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/pentax/k-5.toml

@@ -0,0 +1,13 @@
+make = "PENTAX"
+model = "PENTAX K-5"
+clean_make = "Pentax"
+clean_model = "K-5"
+#blackpoint = 512
+whitepoint = 15866
+color_pattern = "BGGR"
+active_area = [0, 0, 32, 0]
+crop_area = [22, 10, 42, 10]
+
+
+[cameras.color_matrix]
+D65 = [0.8713, -0.2833, -0.0743, -0.4342, 1.1900, 0.2772, -0.0722, 0.1543, 0.6247]