RFR: 8264149 BreakpointInfo::set allocates metaspace object in VM thread [v4]

[Coleen Phillimore]

> This change creates a Metaspace::allocate function that doesn't pass TRAPS to be used by MethodCounters.  TRAPS and exceptions shouldn't be thrown from non-JavaThreads.
> 
> Tested with tier1-7.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  Rename MethodCounter allocate functions, refactor null checking.

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3207/files
  - new: https://git.openjdk.java.net/jdk/pull/3207/files/459f63bf..807c84ba

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3207&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3207&range=02-03

  Stats: 24 lines in 3 files changed: 9 ins; 8 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3207.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3207/head:pull/3207

PR: https://git.openjdk.java.net/jdk/pull/3207