make distcheck run fine

REPLY is to be sent back before getting blanked and reverted to the built-in
action. Now, we can make CWD fail once and then succeed when retried.

dir instead of the source dir, reverting that change

taken care of by the exit-free anyway but caused test case 75 and 76 to
report memory leaks).

Also re-indented a small section.

in the urlglobbing just now, fixed in the debian bug tracker as Bug#203827

as otherwise will make distcheck fail

the file in the dist-hook to make distcheck run fine

make sure it set async false even when using ipv6 (made test case 20 fail
before)

build libcurl to use ares for asynch name resolves.

asynch name resolves. Still very experimental, beware!