Daemon log rotation disabled in schedd when using clone(). #4753

In the dprintf() code, the flag DebugRotateLog controls whether the
process should worry about rotating the log. We set this to false in
children fork()d from a daemon to avoid a race between parent and child
to rotate the log. Unfortunately, when clone() is used in
Create_Process(), changing DebugRotateLog in the child also changes it
in the parent. Consequently, the schedd stops rotating its log.
To fix, we set DebugRotateLog back to true when the child is done using
dprintf(), indicated via an existing function call.
Avoid dprintf() file manipulations when in cloned child process. #4753

Any changes to the files that dprintf() has open or locked while in a
cloned child may foul up the parent process.
turn of pre-release on 8.2.6 release branch
change V8_2-branch version to 8.2.7
Merge branch 'V8_2_6-branch' into V8_3_2-branch
Merge branch 'V8_2-branch' into V8_3_2-branch