[gtkmm] Docs: Use doxygen-extra.css

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 57e28aea11f5e3bb7471ef209b2fa0dbe56c3181
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Sun Oct 26 16:24:32 2014 +0100

    Docs: Use doxygen-extra.css
    
    * configure.ac: Require mm-common 0.9.7.
    * .gitignore: Ignore doxygen-extra.css.
    * docs/reference/Doxyfile.in: Use doxygen-extra.css instead of doxygen.css.

 .gitignore                 |    1 +
 configure.ac               |    2 +-
 docs/reference/Doxyfile.in |    4 ++--
 3 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 31c2a20..c6789c6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -47,6 +47,7 @@ demos/pixbuf-demo
 /docs/doc-install.pl
 /docs/doc-postprocess.pl
 /docs/doxygen.css
+/docs/doxygen-extra.css
 /docs/tagfile-to-devhelp2.xsl
 /docs/reference/Doxyfile
 /docs/reference/doxygen.log
diff --git a/configure.ac b/configure.ac
index 8d82e2d..8aa35fd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -30,7 +30,7 @@ m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
 AM_MAINTAINER_MODE
 AC_ARG_VAR([ACLOCAL_FLAGS], [aclocal flags, e.g. -I <macro dir>])
 
-MM_PREREQ([0.9.6])
+MM_PREREQ([0.9.7])
 MM_INIT_MODULE([gdkmm-3.0])
 MM_INIT_MODULE([gtkmm-3.0])
 
diff --git a/docs/reference/Doxyfile.in b/docs/reference/Doxyfile.in
index 6852aa4..fb62576 100644
--- a/docs/reference/Doxyfile.in
+++ b/docs/reference/Doxyfile.in
@@ -168,8 +168,8 @@ HTML_OUTPUT            = html
 HTML_FILE_EXTENSION    = .html
 HTML_HEADER            =
 HTML_FOOTER            =
-HTML_STYLESHEET        = "$(MMDOCTOOLDIR)/doxygen.css"
-HTML_EXTRA_STYLESHEET  =
+HTML_STYLESHEET        =
+HTML_EXTRA_STYLESHEET  = "$(MMDOCTOOLDIR)/doxygen-extra.css"
 HTML_EXTRA_FILES       =
 HTML_COLORSTYLE_HUE    = 220
 HTML_COLORSTYLE_SAT    = 100