RFC: Backport fix for Sun Bug 6539464 (Math.log() produces inconsistent results)

[Andrew Haley]

Omair Majid wrote:
> Hi,
> 
> There is an issue in HS14 on x86_64 where calls to Math.log() can return
> different values for the same input value. This patch backports the fix
> [1] from OpenJDK7 (b56) to IcedTea6
> 
> Sun's bug entry:
> http://bugs.sun.com/view_bug.do?bug_id=6539464
> Red Hat's bugzilla entry:
> https://bugzilla.redhat.com/show_bug.cgi?id=500077
> 
> ChangeLog:
> 2009-05-11  Omair Majid  <omajid at redhat.com>
> 
>     * patches/hotspot/default/icedtea-6539464.patch: New file. Backport
>       fix for Sun Bug 6539464 from OpenJDK7
>     * Makefile.am (ICEDTEA_PATCHES): Apply the above.
>     * HACKING: Document the above.

Well caught!  Please push this upstream straight away.  I imagine it'll be
approved immediately.

Andrew.