Re: Bug#368012: mingw crosscompilation broken with autoconf-2.59.cvs.2006.05.13-1

[Ralf Wildenhues]

>       * lib/autoconf/lang.m4 (_AC_COMPILER_EXEEXT_DEFAULT): Drop the
>       initialization of `ac_cv_exeext', do not override it if it was
>       already set.  Add comment about this potential backward
>       incompatibility.  Do not export `ac_cv_exeext', Libtool hasn't
>       needed this for years.

Scratch this patch.  It's Autoconf-2.13 that sets ac_cv_exeext=no.
If GCC is going to use 2.13 and 2.60 in one tree, then we need to
explicitly ignore a cache value of `no'.  I'll make another patch.

Cheers,
Ralf