[bug-mailutils] Patches for Cygwin build

[Ken Brown]

I see from the archives that various people have tried to build 
mailutils on Cygwin, most recently here:

  http://lists.gnu.org/archive/html/bug-mailutils/2013-12/msg00000.html

I've succeeded in making the build work with the three attached patches.

The main issue is that libtool won't build shared libraries on Cygwin 
unless the -no-undefined flag is used.  The first patch takes care of that.

But then there are in fact some undefined symbols, which I fixed in the 
third patch.

Finally, as was already noted in response to the message cited above, 
-llber is needed on Cygwin.  More generally, it is needed on any 
platform in which the ber_* functions are in -llber rather than -lldap. 
I imagine this could be the case on some platforms other than Cygwin, so 
I wrote the second patch to apply to any such platform.

Although the three patches are needed for Cygwin, I don't think they do 
any harm on other platforms.  Please consider installing them.

Thanks.

Ken

P.S. I also have some test failures that I might need help with, but 
I'll write about them separately, after I've tried to fix them myself.

0001-Enable-building-of-shared-libraries-on-Cygwin.patch
Description: Text document

0002-Add-library-needed-for-linking-on-Cygwin.patch
Description: Text document

0003-Fix-undefined-symbols-errors-on-Cygwin.patch
Description: Text document