RFR: 8263974: Move SystemDictionary::verify_protection_domain [v2]

[Coleen Phillimore]

> Please review this mostly trivial fix to move SystemDictionary::validate_protection_domain into Dictionary and hide the functions in Dictionary that it calls.  This change also removes some #include dictionary.hpp and a TRAPS parameter where not needed.
> 
> See CR for more details.  This function was in the middle of others that I want to keep together in systemDictionary.cpp.
> 
> Tested with tier1 on 4 Oracle supported platforms.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  Move comment down to the code it describes.

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3120/files
  - new: https://git.openjdk.java.net/jdk/pull/3120/files/33283cbf..46949f21

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3120&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3120&range=00-01

  Stats: 2 lines in 1 file changed: 1 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3120.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3120/head:pull/3120

PR: https://git.openjdk.java.net/jdk/pull/3120