Added #148 and # 149

  server using the multi interface, the commands are not being sent correctly
  and instead the connection is "cancelled" (the operation is considered done)
  prematurely. There is a half-baked (busy-looping) patch provided in the bug
  report but it cannot be accepted as-is. See
  http://curl.haxx.se/bug/view.cgi?id=2006544

146 - Yehoshua Hershberg's re-using of connections that failed with
      CURLE_PEER_FAILED_VERIFICATION

147 - PHP's bug report #43158 (http://bugs.php.net/bug.php?id=43158) identifies
      a true bug in libcurl built with OpenSSL.

OpenSSL.

reentrant.m4 and remove reentrant.m4 before calling aclocal.

address in an IPv6 capable libcurl.

This quadigraph used before a C preprocessor 'define' directive could
be fooling M4, when processing this file, and make it think that the
line contains a pure M4 'define' macro.

in top Makefile.am triggered a problem that prevented aclocal from running
successfully on SunOS 5.10 with GNU m4 1.4.5 and GNU Autoconf 2.61

A tarball which reproduces mentioned problem is the one dated July-28-2008
http://cool.haxx.se/curl-daily/curl-7.19.0-20080728.tar.gz

We actually don't need all the bells and whistles that the above mechanism
provides. We only need to include our m4/reentrant.m4 file in acinclude.m4
so here we go with this simpler mechanism.

Made --interface tests less restrictive on host address.

because at the current point in time I think the benefit of adding that new
return code is very slim and it is a lot of work to introduce new return codes
(for docs and maintenance etc)

I added "145 - Phil Blundell's CURLOPT_SCOPE patch/work" since I want it
sorted/committed.

localhost interface.

an IPv6 address.

and for debugging purposes show ACLOCAL_FLAGS.

Partially undo change that prevented SED, GREP, EGREP and AR from being changed by libtool or autoconf.

definition which might be defined in config.h or config-*.h files

but it breaks aclocal execution on some systems, with the following error:

Can't locate object method "rel2abs" via package "File::Spec" at /usr/local/bin/aclocal line 256.

address in an IPv6 capable libcurl.

needed, and being able to define it if appropriate for further configure tests
as well as for the generated config file.

  overrun" (http://curl.haxx.se/bug/view.cgi?id=2026240) identifying two
  problems, and providing the fix for them:

  - CURL_READFUNC_PAUSE did in fact not pause the _sending_ of data that it is
    designed for but paused _receiving_ of data!

  - libcurl didn't internally set the read counter to zero when this return
    code was detected, which would potentially lead to junk getting sent to
    the server.

that other package's underquoted m4 function definitions have on ours.