Add support for package codename into codename-stamp (like version)

build-utils/package-codename

@@ -0,0 +1,19 @@
+#!/bin/sh
+# Syntax:
+#   $0 <path-to-top_srcdir> <codename-stamp-file>
+#
+# <path-to-top_srcdir> may be relative
+# <codename-stamp-file> is relative to src/build topdir
+
+top_srcdir="${1-.}"
+test -d "$top_srcdir" || { \
+	echo "Could not change to top_srcdir '$1'" >&2; \
+	exit 1; \
+}
+codename_stamp="${2-codename-stamp}"
+
+if test -f "$top_srcdir/$codename_stamp"; then # dist source tree
+	echo \"$(cat "$top_srcdir/$codename_stamp" | ${TR-tr} -d '\012')\"
+else
+	echo \""Productivity Breaker"\" | ${TR-tr} -d '\012'
+fi

configure.ac

@@ -24,7 +24,7 @@ std-options
 subdir-objects
 ])
 
-AC_DEFINE_UNQUOTED([AWESOME_RELEASE], ["Productivity Breaker"], [release code name])
+AC_DEFINE_UNQUOTED([AWESOME_RELEASE], [m4_esyscmd([./build-utils/package-codename . codename-stamp])], [release code name])
 
 AC_MSG_CHECKING([package version according to autoconf])
 AC_MSG_RESULT([${PACKAGE_VERSION}])