Bug#247756: xlibmesa-dri: upstream tag -- what ought I to do? how can I help?

[Chris Metzler <cmetzler@speakeasy.net>]

Package: xlibmesa-dri
Version: 4.3.0.dfsg.1-1
Severity: normal
Followup-For: Bug #247756


Hi.  The upstream tag makes sense, from what little I
understand of X; I doubted this bug was caused by Debian
modifications/additions per se.  But given this, does it
make sense for me to report the bug to upstream?  Or have
you already done this?  And given the XF86 license issues,
the creation of X.org, etc., who's "upstream" at this point?
XF86?  X.org?  mesa.sourceforge.net?  dri.sourceforge.net?
I ask because if this bug is being considered upstream
somewhere, I'd like to be able to follow progress, if any,
and offer to provide more information as needed.

Thanks,

-c

-- System Information:
Debian Release: testing/unstable
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.4.23.040214a
Locale: LANG=C, LC_CTYPE=C

Versions of packages xlibmesa-dri depends on:
ii  xlibmesa-gl               4.3.0.dfsg.1-1 Mesa 3D graphics library [XFree86]

-- no debconf information