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/FindPackageMessage.cmake

@@ -14,9 +14,9 @@
 #  if(X11_FOUND)
 #    FIND_PACKAGE_MESSAGE(X11 "Found X11: ${X11_X11_LIB}"
 #      "[${X11_X11_LIB}][${X11_INCLUDE_DIR}]")
-#  else(X11_FOUND)
+#  else()
 #   ...
-#  endif(X11_FOUND)
+#  endif()
 
 #=============================================================================
 # Copyright 2008-2009 Kitware, Inc.
@@ -44,6 +44,6 @@ function(FIND_PACKAGE_MESSAGE pkg msg details)
       # message again.
       set("${DETAILS_VAR}" "${details}"
         CACHE INTERNAL "Details about finding ${pkg}")
-    endif(NOT "${details}" STREQUAL "${${DETAILS_VAR}}")
-  endif(NOT ${pkg}_FIND_QUIETLY)
-endfunction(FIND_PACKAGE_MESSAGE)
+    endif()
+  endif()
+endfunction()