Add TAME version output to conf.xsl

* conf.xsl.in (tame:version{,-major,-minor,-rev,-suffix}: Added.

* configure.ac (VERSION, MAJOR, MINOR, REV, SUFFIX): Added.

conf.xsl.in

@@ -1,8 +1,8 @@
 <?xml version="1.0"?>
 <!--
-  General configuration
+  General configuration and version information
 
-  Copyright (C) 2015 LoVullo Associates, Inc.
+  Copyright (C) 2015, 2016 LoVullo Associates, Inc.
 
     This file is part of TAME.
 
@@ -21,9 +21,23 @@
     <http://www.gnu.org/licenses/>.
 -->
 <stylesheet version="2.0"
-  xmlns="http://www.w3.org/1999/XSL/Transform">
+            xmlns="http://www.w3.org/1999/XSL/Transform"
+            xmlns:xs="http://www.w3.org/2001/XMLSchema"
+            xmlns:tame="http://www.lovullo.com/tame">
 
-<!-- hoxsl path is configured at build time -->
-<import href="@HOXSL@/apply/thrush.xsl" />
+  <variable name="tame:version" as="xs:string"
+            select="@VERSION@" />
+
+  <variable name="tame:version-major"  as="xs:string"
+            select="@MAJOR@" />
+  <variable name="tame:version-minor"  as="xs:string"
+            select="@MINOR@" />
+  <variable name="tame:version-rev"    as="xs:string"
+            select="@REV@" />
+  <variable name="tame:version-suffix" as="xs:string"
+            select="@SUFFIX@" />
+
+  <!-- hoxsl path is configured at build time -->
+  <import href="@HOXSL@/apply/thrush.xsl" />
 
 </stylesheet>

configure.ac

@@ -20,6 +20,18 @@ AC_INIT([tame], [0.0.0], [dev@lovullo.com])
 AC_CONFIG_AUX_DIR([tools])
 AM_INIT_AUTOMAKE([foreign])
 
+# provide more granular version numbers based on the version string, using
+# the format MAJOR.MINOR.REV[-SUFFIX], where SUFFIX can itself contain
+# dashes (and often will)
+m4_define([ver_split],
+  m4_split(
+    patsubst(AC_PACKAGE_VERSION, [^\([^-]+\)-], [\1.]),
+    [\.]))
+AC_SUBST(MAJOR, m4_argn(1, ver_split))
+AC_SUBST(MINOR, m4_argn(2, ver_split))
+AC_SUBST(REV, m4_argn(3, ver_split))
+AC_SUBST(SUFFIX, m4_argn(4, ver_split))
+
 AC_ARG_VAR([JAVA], [The Java executable])
 AC_CHECK_PROGS(JAVA, [java])