hg: jdk/jdk: 8218975: Bug in macOSX kernel's pthread support

[kim.barrett at oracle.com]

Changeset: 4b6a629d0615
Author:    kbarrett
Date:      2019-03-19 14:32 -0400
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/4b6a629d0615

8218975: Bug in macOSX kernel's pthread support
Summary: Use freelist of pthread_mutex/condvar pairs on macOSX.
Reviewed-by: tschatzl, dholmes, dcubed
Contributed-by: kim.barrett at oracle.com, patricio.chilano.mateo at oracle.com

! src/hotspot/os/posix/os_posix.cpp
! src/hotspot/os/posix/os_posix.hpp
! src/hotspot/os/posix/os_posix.inline.hpp