Change Details

In particular, on Solaris the default `diff` is missing `-L`.

On Solaris, the default `diff` is missing `-L`, which leads to "Can't parse an empty diff!" errors in Differential with certain whitespace options (those that require us to regenerate diffs on the server) enabled.

In particularOn Solaris, the default `diff` is missing `-L`, on Solaris the default `diff` is missing `-L`which leads to "Can't parse an empty diff!" errors in Differential with certain whitespace options (those that require us to regenerate diffs on the server) enabled.