Use PATH in call get_filename_component instead of DIRECTORY

to ensure compatibility with CMake <= 2.8.11.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit f6449dbda4)

doc/CMakeLists.txt

@@ -5,11 +5,10 @@ string( REGEX REPLACE "[ \r\n\t]+" ";" _linguas "$ENV{LINGUAS}" )
 
 # base documentation
 file( GLOB _dirs RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} * )
-list( REMOVE_ITEM _dirs "tdeioslave" )
+list( REMOVE_ITEM _dirs html man tdeioslave )
 
 foreach( _dir IN LISTS _dirs )
   if( IS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/${_dir}
-      AND NOT "${_dir}" STREQUAL "man"
       AND ( "${_dir}" STREQUAL "en" OR
             "${_linguas}" MATCHES "^;*$" OR
             ";${_linguas};" MATCHES ";${_dir};" ))
@@ -36,7 +35,7 @@ endforeach()
 file( GLOB _dirs RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}/tdeioslave tdeioslave/*/* )
 
 foreach( _dir IN LISTS _dirs )
-  get_filename_component( _lang ${_dir} DIRECTORY )
+  get_filename_component( _lang ${_dir} PATH )
   get_filename_component( _protocol ${_dir} NAME )
   if( IS_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/tdeioslave/${_dir}
       AND NOT "${_lang}" STREQUAL "man"