RFR: 8366905: Store AdapterBlob pointer in AdapterHandlerEntry [v5]

[Ashutosh Mehra]

> This PR removes the need to store entry point addresses in AdapterHandlerEntry by storing a direct pointer to AdapterBlob instead. Entry point addresses can be computed on the fly from the entry point offsets stored in AdapterBlob.

Ashutosh Mehra has updated the pull request incrementally with one additional commit since the last revision:

  Remove incorrectly placed ShouldNotReachHere statements
  
  Signed-off-by: Ashutosh Mehra <asmehra at redhat.com>

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Changes:
  - all: https://git.openjdk.org/jdk/pull/27101/files
  - new: https://git.openjdk.org/jdk/pull/27101/files/1c3d1744..3cfd33e6

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27101&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27101&range=03-04

  Stats: 4 lines in 1 file changed: 0 ins; 4 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27101.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27101/head:pull/27101

PR: https://git.openjdk.org/jdk/pull/27101