[newlib-cygwin] Restore mingw64-x86_64-gcc-core in FAQ listing required packages

[Jon TURNEY]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=e27cfa4631e9ff7ead7b417e87d160cc20c9d03e

commit e27cfa4631e9ff7ead7b417e87d160cc20c9d03e
Author: Jon Turney <jon.turney@dronecode.org.uk>
Date:   Wed Jun 29 15:08:19 2016 +0100

    Restore mingw64-x86_64-gcc-core in FAQ listing required packages
    
    Restore mingw64-x86_64-gcc-core to requirements for 32-bit builds in FAQ
    listing required packages, and give reason.

Diff:
---
 winsup/doc/faq-programming.xml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/winsup/doc/faq-programming.xml b/winsup/doc/faq-programming.xml
index 1f595f8..c64ab4a 100644
--- a/winsup/doc/faq-programming.xml
+++ b/winsup/doc/faq-programming.xml
@@ -683,6 +683,7 @@ installed; you at least need <literal>gcc-g++</literal>, <literal>make</literal>
 <literal>perl</literal>, <literal>cocom</literal>, <literal>gettext-devel</literal>,
 <literal>libiconv-devel</literal> and <literal>zlib-devel</literal>.
 Building for 32-bit Cygwin also requires
+<literal>mingw64-x86_64-gcc-core</literal> (for building the cyglsa64 DLL for WoW64),
 <literal>mingw64-i686-gcc-g++</literal> and <literal>mingw64-i686-zlib</literal>.
 Building for 64-bit Cygwin also requires
 <literal>mingw64-x86_64-gcc-g++</literal> and