Downgrade gettext version to 0.14.6 to support wide range of OSs


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/branches/1.5-xserver@2583 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/unix/configure.ac b/unix/configure.ac
index 8c9d37d..e55af49 100644
--- a/unix/configure.ac
+++ b/unix/configure.ac
@@ -13,7 +13,7 @@
 AC_PROG_LIBTOOL
 AC_LANG([C++])
 AM_GNU_GETTEXT([external])
-AM_GNU_GETTEXT_VERSION([0.17])
+AM_GNU_GETTEXT_VERSION([0.14.6])
 
 case "`(uname -sr) 2>/dev/null`" in
 "SunOS 5"*)