[PATCH] Update build procedure in setup README

[Christopher Faylor]

On Wed, Jul 22, 2009 at 05:38:17PM -0600, Eric Blake wrote:
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>According to Dave Korn on 7/22/2009 2:34 PM:
>>   Makes sense to everyone?  (CC_FOR_BUILD defaults to just 'cc' if you don't
>> set it; it's utterly non-critical which version of GCC is used, however, so I
>> didn't bother to add a version suffix to that one.)
>
>> +       --build=i686-pc-cygwin CC="gcc-3 -mno-cygwin" CXX="g++-3 -mno-cygwin" \
>
>gcc-3, or gcc-4?

setup.exe doesn't build with gcc-4 yet.

cgf