Show make errors but exclude external project warnings on CDash.

CMake/CTestCustom.cmake.in

@@ -27,7 +27,7 @@ SET(CTEST_CUSTOM_MEMCHECK_IGNORE
 SET(CTEST_CUSTOM_ERROR_MATCH
   ${CTEST_CUSTOM_ERROR_MATCH}
   "CMake Error[ :]"
-  "make.*No rule to make target"
+  "No rule to make target"
 
   )
 
@@ -41,6 +41,9 @@ SET(CTEST_CUSTOM_WARNING_EXCEPTION
 
   # external projects
   "Note: checking out"
+  "@CTK_BINARY_DIR@/DCMTK"
+  "@CTK_BINARY_DIR@/GDCM"
+  "@CTK_BINARY_DIR@/ITK"
 
   # kwstyle suppressions
   "[Kk][Ww][Ss]tyle.*kws.*cxx"