7132945: Tiered: adjust OSR threshold of level 3

Summary: Change the value of Tier3BackEdgeThreshold from 7000 to 60000
Reviewed-by: kvn, never

src/share/vm/runtime/globals.hpp

@@ -3574,7 +3574,7 @@ class CommandLineFlags {
           "Threshold at which tier 3 compilation is invoked (invocation "   \
           "minimum must be satisfied.")                                     \
                                                                             \
-  product(intx, Tier3BackEdgeThreshold,  7000,                              \
+  product(intx, Tier3BackEdgeThreshold,  60000,                             \
           "Back edge threshold at which tier 3 OSR compilation is invoked") \
                                                                             \
   product(intx, Tier4InvocationThreshold, 5000,                             \