Test for SVNPath element in Update.xml

The commit "Submit Subversion directory path in Update.xml" added the
element <SVNPath>...</SVNPath> to Update.xml for Subversion work trees.
This commit teaches the CTest.UpdateSVN test to verify the presence of
the element.

Tests/CTestUpdateCommon.cmake

@@ -46,8 +46,9 @@ function(check_updates build)
   endforeach(f)
 
   if(NOT UPDATE_NOT_GLOBAL)
-    set(rev_elements "Revision|PriorRevision")
-    set(rev_regex "^\t<(${rev_elements})>[^<\n]+</(${rev_elements})>$")
+    set(rev_elements Revision PriorRevision ${UPDATE_GLOBAL_ELEMENTS})
+    string(REPLACE ";" "|" rev_regex "${rev_elements}")
+    set(rev_regex "^\t<(${rev_regex})>[^<\n]+</(${rev_regex})>$")
     file(STRINGS ${TOP}/${UPDATE_XML_FILE} UPDATE_XML_REVISIONS
       REGEX "${rev_regex}"
       LIMIT_INPUT 4096
@@ -56,7 +57,6 @@ function(check_updates build)
       string(REGEX REPLACE "${rev_regex}" "\\1" element "${r}")
       set(element_${element} 1)
     endforeach()
-    string(REPLACE "|" ";" rev_elements "${rev_elements}")
     foreach(element ${rev_elements})
       if(NOT element_${element})
         list(APPEND MISSING "global <${element}> element")

Tests/CTestUpdateSVN.cmake.in

@@ -5,6 +5,7 @@
 # Test in a directory next to this script.
 get_filename_component(TOP "${CMAKE_CURRENT_LIST_FILE}" PATH)
 set(TOP "${TOP}/@CTestUpdateSVN_DIR@")
+set(UPDATE_GLOBAL_ELEMENTS SVNPath)
 
 # Include code common to all update tests.
 include("@CMAKE_CURRENT_SOURCE_DIR@/CTestUpdateCommon.cmake")