adds imlib2-support to fluxbox: allows us to load several imageformats

besides xpm. to get imlib2 support in fluxbox one has to 
 
  ./configure --enable-imblib2

default is disabled.  a fluxbox-binary that supports imlib2 will have 
IMLIB2 in "fluxbox -info"-output

explanation to the changed files:

 * xft.m4 -> acinclude.m4 + added ac_path_generic.m4 
   (from http://ac-archive.sourceforge.net/Miscellaneous/ac_path_generic.html)

 * configure.in, Makefile.am, src/FbTk/Makefile.am changed to handle
   imlib2-support

 * Font.cc/hh Image.cc/hh App.cc fluxbox.cc consistent way of init for global
   stuff for fonts and imagehandlers.

 * rest of changes just add the imlib2-code, pretty straightforward

1 files changed, 8 insertions, 3 deletions

diff --git a/src/FbTk/Font.cc b/src/FbTk/Font.cc
index e2e3dec..c7193f7 100644
--- a/src/FbTk/Font.cc
+++ b/src/FbTk/Font.cc
@@ -229,9 +229,14 @@ namespace FbTk {
 bool Font::m_multibyte = false; 
 bool Font::m_utf8mode = false;
 
-// some initialisation for using fonts
-void fontInit() {
-   setlocale(LC_CTYPE, "");
+
+void Font::init() {
+    // must be set before the first XFontSet is created
+    setlocale(LC_CTYPE, "");
+}
+
+void Font::shutdown() {
+
 }
 
 Font::Font(const char *name, bool antialias):