texinfo-4.11: test failures over `which' command

[Michael Deutschmann]

texinfo-4.11 fails its self-tests on my system, specifically,
"dvipdf.test" and "texi2dvi.test".

Running the tests manually reveals that both stop with:

./defs: line 201: which: command not found

There is in fact no "which" command on my system.  While I have heard of
it, it's not in coreutils nor in util-linux.  It's also considered
obsolete in favor of the shell builtin "type", which is more accurate.

As it is also not on the list of allowed utilities a Makefile may depend
on in the GNU Coding Standards, I'd say the assumption that "which" is
available constitutes a bug in the tests.

---- Michael Deutschmann <address@hidden>