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/FindPythonInterp.cmake

@@ -47,16 +47,16 @@ if(PythonInterp_FIND_VERSION)
                     list(APPEND _PYTHON_FIND_OTHER_VERSIONS ${_PYTHON_V})
                 endif()
              endforeach()
-        endif(NOT PythonInterp_FIND_VERSION_EXACT)
+        endif()
         unset(_PYTHON_FIND_MAJ_MIN)
         unset(_PYTHON_FIND_MAJ)
-    else(PythonInterp_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
+    else()
         list(APPEND _Python_NAMES python${PythonInterp_FIND_VERSION})
         set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON${PythonInterp_FIND_VERSION}_VERSIONS})
-    endif(PythonInterp_FIND_VERSION MATCHES "^[0-9]+\\.[0-9]+(\\.[0-9]+.*)?$")
-else(PythonInterp_FIND_VERSION)
+    endif()
+else()
     set(_PYTHON_FIND_OTHER_VERSIONS ${_PYTHON3_VERSIONS} ${_PYTHON2_VERSIONS} ${_PYTHON1_VERSIONS})
-endif(PythonInterp_FIND_VERSION)
+endif()
 
 list(APPEND _Python_NAMES python)
 
@@ -131,7 +131,7 @@ if(PYTHON_EXECUTABLE)
     endif()
     unset(_PYTHON_VERSION_RESULT)
     unset(_VERSION)
-endif(PYTHON_EXECUTABLE)
+endif()
 
 # handle the QUIETLY and REQUIRED arguments and set PYTHONINTERP_FOUND to TRUE if
 # all listed variables are TRUE