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, 5 insertions, 1 deletions

diff --git a/src/FbTk/Makefile.am b/src/FbTk/Makefile.am
index be9b3ef..47ed58f 100644
--- a/src/FbTk/Makefile.am
+++ b/src/FbTk/Makefile.am
@@ -11,6 +11,9 @@ endif
 if XPM
 xpm_SOURCE= ImageXPM.hh ImageXPM.cc
 endif
+if IMLIB2
+imlib2_SOURCE= ImageImlib2.hh ImageImlib2.cc
+endif
 
 libFbTk_a_SOURCES = App.hh App.cc Color.cc Color.hh Command.hh \
         FileUtil.hh FileUtil.cc \
@@ -48,4 +51,5 @@ libFbTk_a_SOURCES = App.hh App.cc Color.cc Color.hh Command.hh \
         MenuIcon.hh MenuIcon.cc \
         ${xpm_SOURCE} \
         ${xft_SOURCE} \
-        ${xmb_SOURCE}
+        ${xmb_SOURCE} \
+        ${imlib2_SOURCE}