mathinline.h to differ.

we can reliably divert the "program not found" error message to
stdout.  Use "find ... -print" instead of "find ... -ls", since -ls is
a GNU extension.

"sherr.txt".

certain programs.

warnings.

Introduce a final "Pack" task that will result in a warning if any
output to stderr exists.  Enable core files.  Recognize core files
even when the file name includes a pid.  Store the config.log file
from liboop.

	function Calendar.ISO.dwim_time does very buggy things when a
	time zone it doesn't understand is encountered, so force
	everybody to use the well-known GMT time zone.

standard rule: each (group of) removed warning(s) should be preceded
by a comment that gives an example of where the warning occurs.  I'm
starting with an almost empty file, and will add back the filters and
collect info on from where they originate.

move files into the result package, to preserve time stamps.  Create
corefiles.txt if any core files are found.

when detecting runtest.

present in mainlog.txt, and the Xenofarm scripts no longer need them.

(cfgwarn): Syntax error fixed.

(dotask): New argument: warnfunc.  All callers updated.  Convert
	to Xenofarm log format version 2.
(cfgwarn, makewarn, ckprgwarn): New functions that hunt for
	warnings.  Extracted from the top level.
(Top Level): Removed special-caseing for taylor.

not have a copyright header.