2. make the libcurl and curl version the same

  input
o have ->passwd and ->name be NULL if no name/passwd was given
o only set default user+password for FTP if no userpwd was given

#include "../lib/memdebug.h" for memory debug builds.

command line.

hogs Windows machines when libcurl is being used multi-threaded (with > ~50
threads). Andrew Fuller helped us verify and test this.

According to a MSDN web page on connect(), it returns 0 when the connect
is done and thus we don't need the getsockopt() call anyway on Windows.

the patches already applied. No need to apply any patches manually anymore.

ares 1.1.1 is still compatible.