[PATCH] Potential reference count races

[max at mtew.isa-geek.net]

From: Max TenEyck Woodbury <max at mtew.isa-geek.net>

I have been looking at the Microsoft COM and related documentations
and noticed that they emphatically recomend using the Interlocked...
functions when manipulating reference counts.  I managed to set up a
search that showed where many of the reference count updates occur and
was somewhat surprised at how often this advice was not followed.

While I have not converted every reference count update to use the
Interlocked... functions, this set of patches fixes a fair number of
them.

These are not associated with any particular bug report; they are simply
a general precausion against operations that are known to be associated
with race conditions.

The patches are independent of each other.  They are NOT a series.

-- 
1.7.7.6