[RFR]: Fix broken build

[Arthur Eubanks]

The previous change is broken (I thought I tested it...) due to a type that
the JVM doesn't recognize. int64 -> julong.

diff --git a/src/hotspot/share/runtime/tsan.cpp
b/src/hotspot/share/runtime/tsan.cpp
--- a/src/hotspot/share/runtime/tsan.cpp
+++ b/src/hotspot/share/runtime/tsan.cpp
@@ -58,7 +58,7 @@ typedef void (*AddFrameFunc)(void *ctx,
 // This is not in tsanExternalDecls.hpp because this is a function that
the JVM
 // is supposed to override which TSAN will call, not a TSAN function that
the
 // JVM calls.
-extern "C" void __tsan_symbolize_external_ex(int64 pc,
+extern "C" void __tsan_symbolize_external_ex(julong pc,
                                              AddFrameFunc addFrame,
                                              void *ctx) {