RFR: 8287908: Use non-cloning reflection methods where acceptable [v2]

[Сергей Цыпанов]

> Instead of `Executable.getParameterTypes()` we could use `Executable.getSharedParameterTypes()` in trusted code. Same is applicable for `Executable.getExceptionTypes()`.

Сергей Цыпанов has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'master' into 8287908
 - 8287908: Use non-cloning reflection methods where acceptable

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/9064/files
  - new: https://git.openjdk.java.net/jdk/pull/9064/files/a6715257..635854b2

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=9064&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=9064&range=00-01

  Stats: 1833 lines in 92 files changed: 1180 ins; 242 del; 411 mod
  Patch: https://git.openjdk.java.net/jdk/pull/9064.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/9064/head:pull/9064

PR: https://git.openjdk.java.net/jdk/pull/9064