RFR: Add function entry/exit instruments for aarch64

[Jie He]

Add function entry/exit instruments for aarch64, including 3 places:
gernate_normal_entry, generate_native_entry and generate_native_wrapper.

PS, I'm not sure if it's neccessary to instrument tsan into
generate_native_wrapper, which is for compiled code. Now just follow x86.
In addition, all tsan test cases could pass even though I remove the
instruments in generate_native_wrapper.

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Commit messages:
 - Add function entry/exit instruments for aarch64

Changes: https://git.openjdk.java.net/tsan/pull/7/files
 Webrev: https://webrevs.openjdk.java.net/tsan/7/webrev.00
  Stats: 27 lines in 2 files changed: 27 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/tsan/pull/7.diff
  Fetch: git fetch https://git.openjdk.java.net/tsan pull/7/head:pull/7

PR: https://git.openjdk.java.net/tsan/pull/7