review of infrastructure and installation path
added constant CURLSOCKTYPE_ACCEPT
updated documentation
added constant CURLSSH_AUTH_AGENT
added curl_multi_wait
added work around for curl bug (probably)

As  crazy   as   it  seems   with   cURL  7.29.0   applying
"curl_multi_cleanup()" to a  multi handle than never  had any easy
handles  registered will  cause  a segmentation  fault.  For  this
reason the multi cleanup function will register an easy handle when it
detects  a "clean" multi handle.
updated curl version tested with
small documentation fixes
enabled maintainer mode in maintainer's configuration script
added makefile rules test-vie and test-run to start the "vicare" executable under the search path for loading this package libraries
better handling of workaround for curl bug about empty multi handle cleanup crash