* configure.ac: Issue an error if AC_PROG_LEX didn't find a lexer
generator and either src/lexgrog.c or src/zsoelim.c is missing (as may
be the case when building from a git clone rather than a released
tarball).
This exposed the fact that errors from unlink in the cleanup path were
previously ignored. We now issue a warning in the same way that
commit_tmp_cat does.
* src/man.c (cleanup_unlink): New function.
(open_cat_stream, close_cat_stream, display_catman): Use cleanup_unlink
rather than an incorrect cast of unlink.
The versions of gettext infrastructure files installed by gnulib-tool
don't necessarily match our configured AM_GNU_GETTEXT_VERSION, so we
need to fix things up in bootstrap.
* bootstrap.conf (gnulib_tool_option_extras): Set --po-base to gl/ref-po
rather than gnulib/po.
(bootstrap_post_import_hook): Merge temporary gl/ref-po directory into
gl/po.
* bootstrap: Sync to Gnulib 900ca5c0b092e50f9f17329feea3fbfe2b6e2139.
* bootstrap.conf (GNULIB_REVISION): Set to
900ca5c0b092e50f9f17329feea3fbfe2b6e2139.