pdf of the manual runs certain long lines off into the right margin and beyond.
A fix forces a line break in an unusual way, and thus the pdf can be
fine wrt line breaks, but at the price of the html looking wrong.
Undo change in exit code checks for file transfer child processes. #4328

When a process created with Create_Thread() exits, we terminate the
process by exec'ing /bin/true or /bin/false. This means any non-zero
return value of the child is translated into the exit code of
/bin/false. On Solaris, this is 255, not 1.

For 8.0, we'll rely on the final status update to catch failures that
result in exiting with a non-zero status.
Merge branch 'V8_0-branch' into V8_1_6-branch