RFR: 8276789: Support C++ lambda in ResourceHashtable::iterate [v6]

[Ioi Lam]

> I added two new template functions to reduce the boilerplate code when walking the entries in a ResourceHashtable
> 
> - `template<typename F> void ResourceHashtable::iterate(F f)`
> - `template<typename F> void ResourceHashtable::iterate_all(F f)`
> 
> I also modified a couple of places in systemDictionaryShared.cpp to use the new functionality.
> 
> Testing with tiers 1-4.

Ioi Lam 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 eight additional commits since the last revision:

 - Merge branch 'master' of https://github.com/openjdk/jdk into 8276789-cpp-lambda-for-resourceHash-iterate
 - removed empty first line
 - Renamed DumpTimeSharedClassTable::iterate_all_live_classes() to avoid confusion with overloading
 - some clean up suggested by @stefank
 - Fixed typo in comment (it loader -> its loader)
 - Better naming of variables. E.g., (F f) -> (Function function), as suggested by @@stefank
 - changed to use lambda capture by reference [&]
 - 8276789: Support C++ lambda in ResourceHashtable::iterate

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8761/files
  - new: https://git.openjdk.java.net/jdk/pull/8761/files/083fb72d..811beca9

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8761&range=05
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8761&range=04-05

  Stats: 106908 lines in 1574 files changed: 43508 ins; 53400 del; 10000 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8761.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8761/head:pull/8761

PR: https://git.openjdk.java.net/jdk/pull/8761