when building anything with libcurl

Bug #12733 over on php.net

a NULL pointer. Now, we treat a missing CURLOPT_POSTFIELDS as if there is
no data to send.

like: "curl -d moo=foo -G daniel.haxx.se" currently fails.

"%" -> "%s"

declare at the top of the file, put the private functions at the bottom of
the file, however, this is clearer imho (since _ftp is already there).

to use 'struct UrlData *' instead

must merge before commit
must merge before commit

variables

with the more appropriate 'struct UrlData *' instead.

post fix, no more globals in ssl code fix, size_t and const fix, a few VMS
changes