Implement Jakub's patch for the missing FLTK_SOURCE_DIR in

the doxyfile generation of the html docs.



git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12636 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

documentation/Makefile

@@ -140,6 +140,7 @@ Doxyfile: Doxyfile.in
 	    -e's, @LATEX_HEADER@,,' \
 	    -e's,@CMAKE_CURRENT_SOURCE_DIR@/,,' \
 	    -e's,@CMAKE_SOURCE_DIR@/,../,' \
+	    -e's,@FLTK_SOURCE_DIR@/,../,' \
 	    < $< > $@
 
 Doxybook: Doxyfile.in
@@ -150,6 +151,7 @@ Doxybook: Doxyfile.in
 	    -e's,@LATEX_HEADER@,src/fltk-book.tex,' \
 	    -e's,@CMAKE_CURRENT_SOURCE_DIR@/,,' \
 	    -e's,@CMAKE_SOURCE_DIR@/,../,' \
+	    -e's,@FLTK_SOURCE_DIR@/,../,' \
 	    < $< > $@
 
 # The HTML files are generated using doxygen, and this needs