RFR: JDK-8328012 : Convert InputMethod (/java/awt/im) applet tests to main [v5]

[Harshitha Onkar]

> Following InputMethod applet tests are converted to main using PassFailJFrame
> 
> 1. java/awt/im/8132503/bug8132503.java (Renamed to PinyinIMFullstopTest.java)
> 2. java/awt/im/8148984/bug8148984.java (Renamed to PinyinIMCommaTest.java) 
> 
> - test instructions are updated to make to more clear
> - tests renamed 
> - moved one directory above - /java/awt/im/
> - html file deleted.
> 
> Two tests are updated as part of this PR as they are similar, details here https://github.com/openjdk/jdk/pull/18251#issuecomment-1992577598

Harshitha Onkar has updated the pull request incrementally with one additional commit since the last revision:

  review updates

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18251/files
  - new: https://git.openjdk.org/jdk/pull/18251/files/67acd86f..19fa3fe8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18251&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18251&range=03-04

  Stats: 12 lines in 2 files changed: 1 ins; 1 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/18251.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18251/head:pull/18251

PR: https://git.openjdk.org/jdk/pull/18251