RFR: 8282526: Default icon is not painted properly [v7]

[Alexander Zuev]

> Detect the situation where we do need to perform interpolation during ImageIcon
> painting and set a hint to the rendering to perform bicubic approximation so
> image details are preserved during transition.

Alexander Zuev has updated the pull request incrementally with one additional commit since the last revision:

  Modified test case so it creates the new file instead of having it in
  the test folder. Verified on automatic run.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/7805/files
  - new: https://git.openjdk.org/jdk/pull/7805/files/3d177fea..52333fbb

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=7805&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=7805&range=05-06

  Stats: 19 lines in 2 files changed: 10 ins; 0 del; 9 mod
  Patch: https://git.openjdk.org/jdk/pull/7805.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/7805/head:pull/7805

PR: https://git.openjdk.org/jdk/pull/7805