8184808: (process) isAlive should use pid for validity, not /proc/pid
Reviewed-by: stuefe, xiaofeya

8176272: (process) ProcessHandle::onExit fails to wait for non-child process
Reviewed-by: chegar, stuefe

Merge

8160997: Solaris: deprecated <pwd.h> and <gid.h> interfaces should be replaced
Summary: Use final POSIX 1003.1c versions of getgrgid_r(), getgrnam_r(), getpwnam_r(), and getpwuid_r().
Reviewed-by: alanb, dcubed, simonis, dholmes
Contributed-by: alan.burlison@oracle.com

8161431: JNI pending exceptions in ProcessHandleImpl_linux.c and ProcessHandleImpl_unix.c
Reviewed-by: naoto

8131168: Refactor ProcessHandleImpl_*.c and add implememtation for AIX
Reviewed-by: rriggs, smarks

8078099: (process) ProcessHandle should uniquely identify processes
8078108: (process) ProcessHandle.isAlive should be robust
Summary: isAlive should check and confirm the start time
Reviewed-by: simonis, plevart

8077350: JEP 102 Process API Updates Implementation
Reviewed-by: chegar, plevart, psandoz, darcy, martin, alanb