Added stream_full_chunks option

With this option, the process given by stream_to will get a message with chunk data each fully received chunk; stream_chunk_size is set to infinity for this. This is useful for certain applications that stream live data with each unit being represented by a single chunk; one example is CouchDB's continuous changes feed.

sock options ignored on ssl

Conn_timeout = get_value(connect_timeout, Options, Timeout),
    case do_connect(Host_1, Port_1, Options, State_2, Conn_timeout) of

for packaging in hex

Fix ibrowse_http_client.erl

Fix misprint in #130

Digest could mean HTTP Digest Authentication which is completely
different from what we call Digest currently. Renaming this is
essential to implement the actual HTTP Digest Authentication

Build under R18 #129

removes doubled repl prompt

Add max_attempts option

Missed in original work.

Connections warned of badargs to ets:delete
when shutting the server down with open connections;
created noise while reviewing test results.

Algorithm change had bug where ets:select return
value was incorrectly assumed to be the object key
and not the entire object causing the following
delete attempt based on a matchspec and the key to fail.

This meant that ets was not updated to reflect the completed
requests on each connection and causing exaustion of pipelines
event though connections were idle.  Functional test added which
demonstrated the problem.