2009-11-18 Thiago Macieira <thiago.macieira@nokia.com>

2009-11-18  Thiago Macieira <thiago.macieira@nokia.com>

        Reviewed by Gavin Barraclough.

        [Qt] Implement symbol hiding for JSC's JIT functions.

        These functions are implemented directly in assembly, so they need the
        proper directives to enable/disable visibility. On ELF systems, it's
        .hidden, whereas on Mach-O systems (Mac) it's .private_extern. On
        Windows, it's not necessary since you have to explicitly export. I
        also implemented the AIX idiom, though it's unlikely anyone will
        implement AIX/POWER JIT.
        https://bugs.webkit.org/show_bug.cgi?id=30864

        * jit/JITStubs.cpp:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@51141 268f45cc-cd09-0410-ab3c-d52691b4dbfc