hg: jdk7/hotspot-rt/hotspot: 6588413: Use -fvisibility=hidden for gcc compiles

[coleen.phillimore at oracle.com]

Changeset: d70fe6ab4436
Author:    coleenp
Date:      2011-02-01 11:23 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/d70fe6ab4436

6588413: Use -fvisibility=hidden for gcc compiles
Summary: Add option for gcc 4 and above, define JNIEXPORT and JNIIMPORT to visibility=default, add for jio_snprintf and others since -fvisibility=hidden overrides --version-script definitions.
Reviewed-by: kamg, never

! make/linux/makefiles/gcc.make
! make/linux/makefiles/mapfile-vers-debug
! make/linux/makefiles/mapfile-vers-product
! src/cpu/sparc/vm/jni_sparc.h
! src/cpu/x86/vm/jni_x86.h
! src/cpu/zero/vm/jni_zero.h
! src/os/linux/vm/jvm_linux.cpp
! src/os/linux/vm/os_linux.cpp
! src/os/solaris/vm/os_solaris.cpp
! src/os_cpu/linux_sparc/vm/os_linux_sparc.cpp
! src/os_cpu/linux_x86/vm/os_linux_x86.cpp
! src/os_cpu/linux_zero/vm/os_linux_zero.cpp
! src/os_cpu/solaris_sparc/vm/os_solaris_sparc.cpp
! src/os_cpu/solaris_x86/vm/os_solaris_x86.cpp
! src/share/vm/prims/forte.cpp
! src/share/vm/prims/jvm.cpp
! src/share/vm/prims/jvm.h