Suppress Qt warning for dashmacmini5 builds

The clang and icc compilers see two lines of warning with
essentially the same message. But the second line does not
say qglobal.h, so remove that part of the warning exclusion
regex. See parent commit for further comments regarding this
warning exclusion.

CTestCustom.cmake.in

@@ -43,7 +43,7 @@ SET(CTEST_CUSTOM_WARNING_EXCEPTION
   "CMakeSetupManifest.xml.*manifest authoring warning.*Unrecognized Element"
   "cc-3968 CC: WARNING File.*" # "implicit" truncation by static_cast
   "ld: warning: directory not found for option .-(F|L)"
-  "qglobal.h.*warning.*This version of Mac OS X is unsupported"
+  "warning.*This version of Mac OS X is unsupported"
   )
 
 IF(NOT "@CMAKE_GENERATOR@" MATCHES "Xcode")