[libgfbgraph] doc: Allow parallel installation

[Álvaro Peña <alvaropg src gnome org>]

commit 5f24a45bf0d6c8d2d7b63a2faecba605a24ab08e
Author: Álvaro Peña <alvaropg gmail com>
Date:   Tue Dec 24 00:59:28 2013 +0100

    doc: Allow parallel installation
    
    https://bugzilla.gnome.org/show_bug.cgi?id=720681

 configure.ac                     |    1 +
 docs/reference/Makefile.am       |    2 +-
 docs/reference/apiversion.xml.in |    1 +
 docs/reference/gfbgraph-docs.xml |    3 ++-
 4 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index ea94c83..a371e3b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -55,6 +55,7 @@ Makefile
 libgfbgraph.pc
 docs/Makefile
 docs/reference/Makefile
+docs/reference/apiversion.xml
 docs/reference/version.xml
 gfbgraph/Makefile
 tests/Makefile])
diff --git a/docs/reference/Makefile.am b/docs/reference/Makefile.am
index 2591630..2707479 100644
--- a/docs/reference/Makefile.am
+++ b/docs/reference/Makefile.am
@@ -12,7 +12,7 @@ AUTOMAKE_OPTIONS = 1.6
 DOC_MODULE=gfbgraph
 
 # Uncomment for versioned docs and specify the version of the module, e.g. '2'.
-#DOC_MODULE_VERSION=2
+DOC_MODULE_VERSION= API_VERSION@
 
 
 # The top-level XML file (SGML in the past). You can change this if you want to.
diff --git a/docs/reference/apiversion.xml.in b/docs/reference/apiversion.xml.in
new file mode 100644
index 0000000..379630b
--- /dev/null
+++ b/docs/reference/apiversion.xml.in
@@ -0,0 +1 @@
+ API_VERSION@
diff --git a/docs/reference/gfbgraph-docs.xml b/docs/reference/gfbgraph-docs.xml
index 6262a95..fb18578 100644
--- a/docs/reference/gfbgraph-docs.xml
+++ b/docs/reference/gfbgraph-docs.xml
@@ -4,10 +4,11 @@
 [
   <!ENTITY % local.common.attrib "xmlns:xi  CDATA  #FIXED 'http://www.w3.org/2003/XInclude'">
   <!ENTITY version SYSTEM "version.xml">
+  <!ENTITY apiversion SYSTEM "apiversion.xml">
 ]>
 <book id="index">
   <bookinfo>
-    <title>GFBGraph Reference Manual</title>
+    <title>GFBGraph &apiversion; Reference Manual</title>
     <releaseinfo>Version &version;</releaseinfo>
     <authorgroup>
       <author>