ICU-3100 add open from short string to the tracing framework

X-SVN-Rev: 15211

icu4c/source/common/unicode/utrace.h

@@ -76,6 +76,7 @@ typedef enum UTraceFunctionNumber {
     UTRACE_UCOL_GETLOCALE,
     UTRACE_UCOL_NEXTSORTKEYPART,
     UTRACE_UCOL_STRCOLLITER,
+    UTRACE_UCOL_OPEN_FROM_SHORT_STRING,
     UTRACE_COLLATION_LIMIT
 } UTraceFunctionNumber;