RFR: JDK-8284688 Minor cleanup could be done in java.security.jgss [v2]

[Mark Powers]

> https://bugs.openjdk.java.net/browse/JDK-8284688
> 
> [JDK-8273046](https://bugs.openjdk.java.net/browse/JDK-8273046) is the umbrella bug for this bug. The changes were too large for a single code review, so it was decided to split into smaller chunks. This is one such chunk: 
> 
> open/src/java.security.jgss/share/classes/javax/security 
> open/src/java.security.jgss/share/classes/org/ietf 
> open/src/java.security.jgss/share/classes/sun/security

Mark Powers has updated the pull request incrementally with one additional commit since the last revision:

  fourth iteration

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7746/files
  - new: https://git.openjdk.java.net/jdk/pull/7746/files/fb0b7f16..e4292aef

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7746&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7746&range=00-01

  Stats: 63 lines in 10 files changed: 13 ins; 0 del; 50 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7746.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7746/head:pull/7746

PR: https://git.openjdk.java.net/jdk/pull/7746