NULL!

sure you have one URL for each -T. A -T file name can also be "globbed"
like -T "{file1,file2}".

Test case 149 verifies this functionality.

Curl_is_resolved() function

to inhibit long long warnings (ISO C90 does not support `long long')

we need to check for its presence in the configure script

when we cleanup the SSL stuff to not leak any memory.

I wish this was documented anywhere.

pointers to the internal default functions

changed the use of AC_CHECK_TYPE as the previous approach is deprecated
require 2.57 properly

out if necessary

2. don't leave allocated memory behind when returning error

only set cookiejar if selected

allocation calls will succeed, the following will return NULL!