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, 7 insertions, 0 deletions

diff --git a/src/FbTk/Image.hh b/src/FbTk/Image.hh
index 6e0bf53..eaa66ae 100644
--- a/src/FbTk/Image.hh
+++ b/src/FbTk/Image.hh
@@ -36,6 +36,13 @@ class PixmapWithMask;
 /// loads images 
 class Image {
 public:
+    
+    /// called at FbTk::App creation time, init some internal stuff
+    static void init();
+
+    /// called at FbTk:App destruction time, frees stuff allocated by init()
+    static void shutdown();
+    
     /// @return an instance of PixmapWithMask on success, 0 on failure
     static PixmapWithMask *load(const std::string &filename, int screen_num);
     /// for register file type and imagebase