Free memory after upgrade to 7.1

[Jason Evans]

Ivan Voras wrote:
> I think this is the major change in malloc between 7.0 and 7.1:
> http://svn.freebsd.org/viewvc/base?view=revision&revision=184602
> 
> You can test if it's the cause of your problem by toggling between 'D'
> and 'M' options to malloc.conf (see malloc(3), don't forget to restart
> apache).

Revision 184602 reverted the behavior so that malloc behaves the *same* 
for the 7.0 and 7.1 releases, with respect to DSS versus heap allocation.

Jason