Log Message:
Make the <meta> modifier work on Linux again by applying a fix
from upstream, ref.

https://github.com/tcsh-org/tcsh/commit/8e6dfd53321a0b0047f7d75db21a946c166c600b

Unfortunately the AsciiOnly reversion causes a SEGV because
*ch is used to index in the command array, and now contains
INVALID_BYTE.  Reproduce error with:
  env -i ./tcsh
  <meta>b
Bump PKGREVISION.