RFR: 8269698: Specification for methods of java.awt.im.InputContext should mention that they do nothing [v2]

[Alexander Zvegintsev]

> This fix simply describes that the `java.awt.im.InputContext` is a dummy implementation, which may not conform its spec.

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

  throw exceptions instead of doc change

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5806/files
  - new: https://git.openjdk.java.net/jdk/pull/5806/files/9bf48ed6..6f6f2680

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5806&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5806&range=00-01

  Stats: 17 lines in 1 file changed: 11 ins; 4 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5806.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5806/head:pull/5806

PR: https://git.openjdk.java.net/jdk/pull/5806