RFR: 8293304: Replace some usages of INTPTR_FORMAT with PTR_FORMAT

[Stefan Karlsson]

During the discussion of [JDK-8292981](https://bugs.openjdk.org/browse/JDK-8292981) an opinion was voiced that we should stop using INTPTR_FORMAT when printing pointers.

Some background that could explain why some tend to use INTPTR_FORMAT instead of PTR_FORMAT:

Both those format specifiers require an integer and the compiler barfs if you send in a pointer. We therefore have a utility function named p2i, which converts the pointer to an integer. So, everywhere we have to write print line like this: `print("my pointer: " PTR_FORMAT, p2i(my_pointer));`. Now, p2i returns an intptr_t, and it becomes natural for some to consider the type of the converted value (that we need because of the mentioned workaround), instead of the original type of the value.

With this enhancement I'd like to clean up the code that I often work in, so that it uses PTR_FORMAT when printing pointers. I'm leaving the rest of the code base for others to consider cleaning up.

Cleanups have been done in directories gc/, utilities/, memory/, and oops/.

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Commit messages:
 - Fix oops/
 - Fix memory/
 - Fix utilities/
 - Fix gc/
 - Add SIZE_FORMAT_X_0

Changes: https://git.openjdk.org/jdk/pull/10141/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10141&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8293304
  Stats: 125 lines in 39 files changed: 6 ins; 0 del; 119 mod
  Patch: https://git.openjdk.org/jdk/pull/10141.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10141/head:pull/10141

PR: https://git.openjdk.org/jdk/pull/10141