Tweak sed expressions for substitutions in version.h.

ChangeLog

 2015-03-25  Niels Möller  <nisse@diamant.hack.org>
 
+	* configure.ac (MAJOR_VERSION, MINOR_VERSION): Tweak sed
+	expressions, to tolerate version suffixes.
+
 	* Makefile.in (distdir): Include assembly files from the new
 	x86_64/aesni, x86_64/fat, and arm/fat directories.
 

configure.ac

@@ -16,8 +16,9 @@ LIBNETTLE_MINOR=0
 LIBHOGWEED_MAJOR=4
 LIBHOGWEED_MINOR=0
 
-MAJOR_VERSION=`echo $PACKAGE_VERSION | sed 's/\(.*\)\..*/\1/g'`
-MINOR_VERSION=`echo $PACKAGE_VERSION | sed 's/.*\.\(.*\)/\1/g'`
+dnl Note double square brackets, for extra m4 quoting.
+MAJOR_VERSION=`echo $PACKAGE_VERSION | sed 's/^\([[^.]]*\)\..*/\1/'`
+MINOR_VERSION=`echo $PACKAGE_VERSION | sed 's/^[[^.]]*\.\([[0-9]]*\).*/\1/'`
 AC_SUBST([MAJOR_VERSION])
 AC_SUBST([MINOR_VERSION])