* NEWS: Autoconf-generated shell scripts no longer export BIN_SH,

* NEWS: Autoconf-generated shell scripts no longer export BIN_SH,
due to configuration hassles with this.  See Tonya Underwood's report
<http://lists.gnu.org/archive/html/bug-autoconf/2006-10/msg00003.html>.
* doc/autoconf.texi (Special Shell Variables): Likewise.

2006-10-11  Paul Eggert  <eggert@cs.ucla.edu>
    Stepan Kasal  <kasal@ucw.cz>

* lib/m4sugar/m4sh.m4 (AS_BOURNE_COMPATIBLE): Don't set BIN_SH.
(_AS_DETECT_BETTER_SHELL): Don't look in /usr/bin/posix.

2006-10-11  Stepan Kasal  <kasal@ucw.cz>

* lib/m4sugar/m4sh.m4 (AS_BOURNE_COMPATIBLE): Move the
  initialization which is not inherited through the environment
(_AS_BOURNE_COMPATIBLE): ... to this new macro.
(_AS_RUN): Call _AS_BOURNE_COMPATIBLE, not AS_BOURNE_COMPATIBLE.