RFR: JDK-8258606: os::print_signal_handlers() should resolve the function name of the handlers

[Thomas Stuefe]

This patch changes the printout for our signal handlers in hs-err files and in `jcmd VM.info` to show the function names of the handlers. This is also interesting for CheckJNI.

Before:
Signal Handlers:
SIGSEGV: [libjvm.so+0xbb8ff0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGBUS: [libjvm.so+0xbb8ff0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGFPE: [libjvm.so+0xbb8ff0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGPIPE: [libjvm.so+0xbb8ff0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGXFSZ: [libjvm.so+0xbb8ff0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGILL: [libjvm.so+0xbb8ff0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGUSR2: [libjvm.so+0xbb8e90], sa_mask[0]=00000000000000000000000000000000, sa_flags=SA_RESTART|SA_SIGINFO
SIGHUP: [libjvm.so+0xbb95b0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGINT: [libjvm.so+0xbb95b0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGTERM: [libjvm.so+0xbb95b0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
SIGQUIT: [libjvm.so+0xbb95b0], sa_mask[0]=11111111011111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO

Now:
Signal Handlers:
   SIGSEGV: [javaSignalHandler(int, siginfo_t*, void*)+0 in libjvm.so], sa_mask[0]=11100100010111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
    SIGBUS: [javaSignalHandler(int, siginfo_t*, void*)+0 in libjvm.so], sa_mask[0]=11100100010111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
    SIGFPE: [javaSignalHandler(int, siginfo_t*, void*)+0 in libjvm.so], sa_mask[0]=11100100010111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
   SIGPIPE: [javaSignalHandler(int, siginfo_t*, void*)+0 in libjvm.so], sa_mask[0]=11100100010111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
   SIGXFSZ: [javaSignalHandler(int, siginfo_t*, void*)+0 in libjvm.so], sa_mask[0]=11100100010111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
    SIGILL: [javaSignalHandler(int, siginfo_t*, void*)+0 in libjvm.so], sa_mask[0]=11100100010111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
   SIGUSR2: [SR_handler(int, siginfo_t*, ucontext*)+0 in libjvm.so], sa_mask[0]=00000000000000000000000000000000, sa_flags=SA_RESTART|SA_SIGINFO
    SIGHUP: [UserHandler(int, void*, void*)+0 in libjvm.so], sa_mask[0]=11100100010111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
    SIGINT: [UserHandler(int, void*, void*)+0 in libjvm.so], sa_mask[0]=11100100010111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
   SIGTERM: [UserHandler(int, void*, void*)+0 in libjvm.so], sa_mask[0]=11100100010111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
   SIGQUIT: [UserHandler(int, void*, void*)+0 in libjvm.so], sa_mask[0]=11100100010111111101111111111110, sa_flags=SA_RESTART|SA_SIGINFO
   SIGTRAP: SIG_DFL, sa_mask[0]=00000000000000000000000000000000, sa_flags=none

The patch introduces a new function, `os::print_function_and_library_name`, which prints a combined function and library name. 

It also introduces gtests for that function. 

I plan to use it in other places to, and unify similar coding, e.g. when printing stack traces (NMT, VMError) or pointer locations (os::print_location). But I leave that for a future RFE.

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Commit messages:
 - Initial

Changes: https://git.openjdk.java.net/jdk/pull/1839/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1839&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8258606
  Stats: 177 lines in 4 files changed: 148 ins; 25 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1839.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1839/head:pull/1839

PR: https://git.openjdk.java.net/jdk/pull/1839