decreased the write buffer size to 16KB to perform a lot better on Windows(!)

for storage and retrieval of private data in the curl handle.

CURLE_OPERATION_TIMEOUTED

too, as Emiliano Ida has confirmed it to work

adjustments and possibly some improvments to feature all those things we
could possibly want from this.

fallback to the old ftp-one to make old programs work the same

directive.

proceed fine with the already existing options, just having a different
internal library default for capath.

working for "IPv6 enabled" libcurls yet, but should be pretty easy for
someone to adjust.

spelling error

checking for particular errors. curl/curl.h defines the errros

sized buffer that may be passed to a write callback