An extern submits a psect and a global reference to the linker to point
to it. Using "extern int vms_show = 0" also creates a globaldef.

The use of the extern by itself does declare a psect but does not declare
a globalsymbol. It does declare a globalref. But the linker needs one and
only one globaldef or there is an error.

Don't initiate a transfer when using --ftp-list.

The flag can be used in pycurl-based applications where using the multi
interface would not be acceptable because of the performance lost caused
by implementing the select() loop in python.

Bug: http://curl.haxx.se/bug/view.cgi?id=1168
Downstream Bug: https://bugzilla.redhat.com/919127

No API change involved.

Info: http://curl.haxx.se/mail/lib-2013-02/0234.html

since mails sent are supposed to have CRLF line endings I added them and
now the data size after (\Seen) matches again properly

Corrected a couple of tab characters between test702 and test703, and
between test900 and test901 which should be spaces.

Added one test for a request with matching UIDVALIDITY and one which is
a mismatched request that will fail.

Any IMAP parameter can come in escaped and in double quotes. Added a
simple function to unquote the command parameters and applied it to
the IMAP command handlers.

The whole of FETCH_imap() had one extra space of indentation, whilst
APPEND_imap() used indentation of 2 instead of 4 in places.

The majority of lines, that specify a test file for inclusion, end with
a tab character before the slash whilst some end with a space. Corrected
those that end with a space to end with a tab character as well.

Finished segregating the email protocol tests, into their own protocol
based ranges, in preparation of adding more e-mail related tests to the
test suite.

Continued segregating the email protocol tests, into their own protocol
based ranges, in preparation of adding more e-mail related tests to the
test suite.

Continued segregating the email protocol tests, into their own protocol
based ranges, in preparation of adding more e-mail related tests to the
test suite.

Started segregating the email protocol tests, into their own protocol
based ranges, in preparation of adding more e-mail related tests to the
test suite.

Patch by: Myk Taylor

... hopefully this will also make clang-analyzer stop warning on
potentional NULL dereferences (which were false positives anyway).

When Curl_do() returns failure, the connection pointer could be NULL so
the code path following needs to that that into account.

Bug: http://curl.haxx.se/mail/lib-2013-03/0062.html
Reported by: Eric Hu

Standardised the naming of all perform based functions to be in the form
imap_perform_something().

No more use exit(3) but instead tell libcurl that no byte has been
written to let it return a `CURLE_WRITE_ERROR`. In addition, check
curl easy handle return code.

8 more bugfixes, one change and a bunch of contributors

Moved the custom request processing into the LIST command as the logic
is the same.