mesa: Set query->EverBound in glQueryCounter().

mesa: Set query->EverBound in glQueryCounter().

glIsQuery is supposed to return false for names returned by glGenQueries
until their first use.  BeginQuery is a use, but QueryCounter is also a
use.

From the ARB_timer_query spec:
"A timer query object is created with the command

      void QueryCounter(uint id, enum target);

 [...] If <id> is an unused query object name, the
 name is marked as used [...]"

Fixes Piglit's spec/ARB_timer_query/query-lifetime.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Cc: mesa-stable@lists.freedesktop.org