inject version strings into orgguide

* doc/orgguide.texi: Include version strings from "org-version.inc".

* doc/Makefile: Make "org-version.inc" a dependency of "guide".

doc/Makefile

@@ -21,7 +21,7 @@ manual guide::
 manual::	org.texi org-version.inc
 	$(TEXI2HTML) -o $@ $<
 	../UTILITIES/mansplit.pl $@/*
-guide::		orgguide.texi
+guide::		orgguide.texi org-version.inc
 	$(TEXI2HTML) -o $@ $<
 	../UTILITIES/guidesplit.pl $@/*
 

doc/orgguide.texi

@@ -3,8 +3,7 @@
 @setfilename ../../info/orgguide
 @settitle The compact Org-mode Guide
 
-@set VERSION 7.8.10
-@set DATE mai 2012
+@include org-version.inc
 
 @c Use proper quote and backtick for code sections in PDF output
 @c Cf. Texinfo manual 14.2