silence warning for CMake 2.8

git-svn-id: https://dng.biozentrum.unibas.ch/svn/openstructure/trunk@2327 5a81b35b-ba03-0410-adc8-b2c5c5119f08

modules/CMakeLists.txt

@@ -3,7 +3,8 @@ file(GLOB ALL_FILES *)
 foreach(fname ${ALL_FILES})
   if(NOT ${fname} MATCHES ".*.svn" 
      AND NOT ${fname} MATCHES ".*CMakeFiles" 
-     AND NOT ${fname} MATCHES ".*main")
+     AND NOT ${fname} MATCHES ".*main"
+     AND NOT ${fname} MATCHES "doc")
       if(IS_DIRECTORY ${fname})
         add_subdirectory(${fname})
       endif()