Remove CMake-language block-end command arguments

Ancient versions of CMake required else(), endif(), and similar block
termination commands to have arguments matching the command starting the
block.  This is no longer the preferred style.

Run the following shell code:

for c in else endif endforeach endfunction endmacro endwhile; do
    echo 's/\b'"$c"'\(\s*\)(.\+)/'"$c"'\1()/'
done >convert.sed &&
git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' |
egrep -z -v '^(Utilities/cm|Source/kwsys/)' |
egrep -z -v 'Tests/CMakeTests/While-Endwhile-' |
xargs -0 sed -i -f convert.sed &&
rm convert.sed

Modules/CheckIncludeFileCXX.cmake

@@ -32,9 +32,9 @@ macro(CHECK_INCLUDE_FILE_CXX INCLUDE VARIABLE)
   if("${VARIABLE}" MATCHES "^${VARIABLE}$")
     if(CMAKE_REQUIRED_INCLUDES)
       set(CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}")
-    else(CMAKE_REQUIRED_INCLUDES)
+    else()
       set(CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS)
-    endif(CMAKE_REQUIRED_INCLUDES)
+    endif()
     set(MACRO_CHECK_INCLUDE_FILE_FLAGS ${CMAKE_REQUIRED_FLAGS})
     set(CHECK_INCLUDE_FILE_VAR ${INCLUDE})
     configure_file(${CMAKE_ROOT}/Modules/CheckIncludeFile.cxx.in
@@ -43,7 +43,7 @@ macro(CHECK_INCLUDE_FILE_CXX INCLUDE VARIABLE)
     if(${ARGC} EQUAL 3)
       set(CMAKE_CXX_FLAGS_SAVE ${CMAKE_CXX_FLAGS})
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${ARGV2}")
-    endif(${ARGC} EQUAL 3)
+    endif()
 
     try_compile(${VARIABLE}
       ${CMAKE_BINARY_DIR}
@@ -56,7 +56,7 @@ macro(CHECK_INCLUDE_FILE_CXX INCLUDE VARIABLE)
 
     if(${ARGC} EQUAL 3)
       set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS_SAVE})
-    endif(${ARGC} EQUAL 3)
+    endif()
 
     if(${VARIABLE})
       message(STATUS "Looking for C++ include ${INCLUDE} - found")
@@ -65,13 +65,13 @@ macro(CHECK_INCLUDE_FILE_CXX INCLUDE VARIABLE)
         "Determining if the include file ${INCLUDE} "
         "exists passed with the following output:\n"
         "${OUTPUT}\n\n")
-    else(${VARIABLE})
+    else()
       message(STATUS "Looking for C++ include ${INCLUDE} - not found")
       set(${VARIABLE} "" CACHE INTERNAL "Have include ${INCLUDE}")
       file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
         "Determining if the include file ${INCLUDE} "
         "exists failed with the following output:\n"
         "${OUTPUT}\n\n")
-    endif(${VARIABLE})
-  endif("${VARIABLE}" MATCHES "^${VARIABLE}$")
-endmacro(CHECK_INCLUDE_FILE_CXX)
+    endif()
+  endif()
+endmacro()