RFR: 8255301: Common and strengthen the code in ciMemberName and ciMethodHandle [v3]

[Aleksey Shipilev]

> There is a TODO item in their `get_vm_target`-s. We can clean those up. It looks to me the caller code does not handle `NULL` result well, which means we better `fatal` ourselves before exposing `NULL` to callers and `SEGV`-ing there.

Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:

  Minor stylistic nit: star leans to the left

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/825/files
  - new: https://git.openjdk.java.net/jdk/pull/825/files/ec242d22..74ceab1f

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=825&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=825&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/825.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/825/head:pull/825

PR: https://git.openjdk.java.net/jdk/pull/825