hg: hsx/hotspot-rt/hotspot: 6749267: Signal handler should save/restore errno

[harold.seigel at oracle.com]

Changeset: 5cd2fac2ae70
Author:    hseigel
Date:      2013-02-19 08:51 -0500
URL:       http://hg.openjdk.java.net/hsx/hotspot-rt/hotspot/rev/5cd2fac2ae70

6749267: Signal handler should save/restore errno
Summary: Save errno before processing signal, then restore it.
Reviewed-by: acorn, sspitsyn

! src/os/bsd/vm/os_bsd.cpp
! src/os/linux/vm/os_linux.cpp
! src/os/solaris/vm/os_solaris.cpp