[jdk11u-dev] RFR: 8257467: [TESTBUG] -Wdeprecated-declarations is reported at sigset() in exesigtest.c

[Paul Hohensee]

8257467: [TESTBUG] -Wdeprecated-declarations is reported at sigset() in exesigtest.c

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Commit messages:
 - Backport fb139cff1a6ddf7659908053d5a0a6ae7563e725

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/675/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=675&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8257467
  Stats: 8 lines in 1 file changed: 7 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/675.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/675/head:pull/675

PR: https://git.openjdk.java.net/jdk11u-dev/pull/675