Replace convenience variable by its expansion

configure.ac

@@ -22,14 +22,12 @@ AM_MAINTAINER_MODE
 AC_CONFIG_HEADERS([include/sane/config.h])
 AC_PREREQ(2.69) dnl Minimum Autoconf version required.
 
-NUMBER_VERSION=${V_MAJOR}.${V_MINOR}.${V_REV}
 AC_DEFINE_UNQUOTED(SANE_DLL_V_MAJOR, $V_MAJOR, [SANE DLL major number])
 AC_DEFINE_UNQUOTED(SANE_DLL_V_MINOR, $V_MINOR, [SANE DLL minor number])
 AC_DEFINE_UNQUOTED(SANE_DLL_V_BUILD, $V_REV, [SANE DLL revision number])
 AC_SUBST(V_MAJOR)
 AC_SUBST(V_MINOR)
 AC_SUBST(V_REV)
-AC_SUBST(NUMBER_VERSION)
 
 dnl no bloody way to have a decent --docdir...
 AC_ARG_WITH(docdir, 

tools/sane-config.in

@@ -37,7 +37,7 @@ fi
 if test $# -gt 0; then
   case $1 in
     --version)
-      echo @NUMBER_VERSION@
+      echo @V_MAJOR@.@V_MINOR@.@V_REV@
       ;;
     --help)
       if test $# -eq 1; then