RFR: JDK-8289077: Add manual tests to open [v2]

[Harshitha Onkar]

> Following manual tests added -
> 
> 1. test/jdk/java/awt/Frame/ALTTABIconBeingErased/ALTTABIconBeingErased.java
> 2. test/jdk/java/awt/Icon/IconChangingTest/IconChangingTest.java
> 3. test/jdk/java/awt/Icon/IconShowingTest/IconShowingTest.java
> 4. test/jdk/java/awt/Icon/IconTransparencyTest/IconTransparencyTest.java
> 5. test/jdk/java/awt/Icon/SetLargeIconTest/SetLargeIconTest.java

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

  added newline

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/12447/files
  - new: https://git.openjdk.org/jdk/pull/12447/files/eacf4f29..a2363ce0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12447&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12447&range=00-01

  Stats: 6 lines in 5 files changed: 5 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/12447.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12447/head:pull/12447

PR: https://git.openjdk.org/jdk/pull/12447