octave @4.2.2_1 : portfile references a nonexistent compilers.setup option

[majoc-at-astro (majoc-at-astro)]

The following appears in this morning's builds, under 10.11 and 10.13; the 10.12 builds started earlier last night.

sysadmin@mptest13:ttys000:~/macports-central $ port info octave
Error: Unable to open port: no such compiler: clang36
sysadmin@mptest13:ttys000:~/macports-central $

This seems rather similar to:

​https://trac.macports.org/ticket/48154

.... and indeed coincides with commit 908dff7, which drops 35 and 36 from $clang_versions.

I'll add the obvious patch file in the morning (I'm rushed for minutes tonight). Thanks in advance, and apologies for omissions in haste.