Add bombich rsync copier.

copiers.d/17-rsync-bombich.cp

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+rsync=/usr/local/bin/rsync
+
+flags="-aNHAXx --fileflags --protect-decmpfs --force-change --rsync-path=$rsync"
+
+# Should exit with code 0 if the necessary programs exist, 1 otherwise
+can-copy () {
+    test -e $rsync
+}
+
+# Should generate some text on stdout identifying which version of the
+# copier is being used, and how it's called.  This is optional.
+version () {
+    $rsync --version
+    echo
+    echo "command = sudo $rsync $flags src/ dst"
+}
+
+# Should perform a copy from $1 to $2.  Both will be directories.  Neither
+# will end with '/'.  So you'll get something like:
+#   backup /Volumes/Src /Volumes/Dst/99-foo
+backup () {
+    sudo $rsync $flags $1/ $2
+}