the recent libcurl changes.

these days since the c_rehash tool is written (fixed) to do the proper
action even on file systems that don't support symlinks.

if --insecure is used. Reported by Hamish Mackenzie.

we attempt to hide some of the more sensitive command line arguments

Matthew Blain.

the necessary directories as specified with -o.

--cacert option is not used.

1. An environment variable named CURL_CA_BUNDLE may contain the full file
name to the file.

2. On Windows, the cert file may be named curl-ca-bundle.crt and put in the
same dir as curl is located (or the CWD) and curl will then use that file
instead.

USE_SSLEAY variable

were used

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.