[gtk-osx] Provide a bison2 module for packages that don't get on well with bison 3.

[John Ralls <jralls src gnome org>]

commit 44e586ac617360c3873fe5ce0b1f84a5a052b77a
Author: John Ralls <jralls ceridwen us>
Date:   Fri Oct 9 10:05:58 2015 -0700

    Provide a bison2 module for packages that don't get on well with bison 3.

 modulesets-stable/bootstrap.modules |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/modulesets-stable/bootstrap.modules b/modulesets-stable/bootstrap.modules
index f96331c..4d23b8b 100644
--- a/modulesets-stable/bootstrap.modules
+++ b/modulesets-stable/bootstrap.modules
@@ -121,6 +121,11 @@
     <branch repo="ftp.gnu.org" module="bison/bison-3.0.2.tar.xz"
             version="3.0.2"/>
   </autotools>
+  
+  <autotools id="bison2" autogen-sh="configure">
+    <branch repo="ftp.gnu.org" module="bison/bison-2.7.1.tar.xz"
+            version="2.7.1"/>
+  </autotools>
 
   <!-- 10.4 has 2.5.4, too old for gstreamer (and probably others as well)
   10.6-10.10 have 2.5.35, 10.5 2.5.33 -->