RFR: 8282044: [JVMCI] Export _sha3_implCompress, _md5_implCompress and aarch64::_has_negatives stubs to JVMCI compiler.

[Yudi Zheng]

This PR allows JVMCI compiler to reuse _sha3_implCompress, _md5_implCompress and aarch64::_has_negatives stubs.

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Commit messages:
 - Export _sha3_implCompress, _md5_implCompress and aarch64::_has_negatives stubs to JVMCI.

Changes: https://git.openjdk.java.net/jdk/pull/7511/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7511&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8282044
  Stats: 7 lines in 2 files changed: 7 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7511.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7511/head:pull/7511

PR: https://git.openjdk.java.net/jdk/pull/7511