[master] RFR: Fix BasicLock to test for UseObjectMonitorTable rather than LM_LIGHTWEIGHT

[Coleen Phillimore]

The test compiler/uncommontrap/TestDeoptOOM.java was failing with -Xcomp because it was looking for the object monitor in the basicLock which is only the case for -XX:+UseObjectMonitorTable.

Testing tier1 locally with table on and off.

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Commit messages:
 - Fix BasicLock to test for UseObjectMonitorTable rather than LM_LIGHTWEIGHT.

Changes: https://git.openjdk.org/lilliput/pull/182/files
  Webrev: https://webrevs.openjdk.org/?repo=lilliput&pr=182&range=00
  Stats: 7 lines in 2 files changed: 0 ins; 0 del; 7 mod
  Patch: https://git.openjdk.org/lilliput/pull/182.diff
  Fetch: git fetch https://git.openjdk.org/lilliput.git pull/182/head:pull/182

PR: https://git.openjdk.org/lilliput/pull/182