RFR: 8274381 missing CAccessibility definitions in JNI code

[Artem Semenov]

accessibilityHitTest in JavaComponentAccessibility and getAxComponentSize in JavaAccessibilityUtilities use but do not define sjc_CAccessibility. It works when sjc_CAccessibility is defined by other methods, otherwise it crashes.

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Commit messages:
 - 8274381 missing CAccessibility definitions in JNI code

Changes: https://git.openjdk.java.net/jdk/pull/5732/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5732&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8274381
  Stats: 2 lines in 2 files changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5732.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5732/head:pull/5732

PR: https://git.openjdk.java.net/jdk/pull/5732