Get rid of the week string in the date format, it might contain different/unusual characters based on windows language setting.

This commit was SVN r23551.

contrib/platform/win32/CMakeModules/ompi_configure.cmake

@@ -110,6 +110,7 @@ EXECUTE_PROCESS(COMMAND cmd /C date /t
 
 STRING (REPLACE "\n" "" CURRENT_TIME ${CURRENT_TIME})
 STRING (REPLACE "\n" "" CURRENT_DATE ${CURRENT_DATE})
+STRING (REGEX MATCH [.-/\0-9]+ CURRENT_DATE ${CURRENT_DATE})
 SET (OMPI_CONFIGURE_DATE "${CURRENT_TIME} ${CURRENT_DATE}" CACHE INTERNAL "OMPI_CONFIGURE_DATE")
 SET (OMPI_BUILD_DATE "${CURRENT_TIME} ${CURRENT_DATE}" CACHE INTERNAL "OMPI_BUILD_DATE")