Inaccurate message for errors on bind parsing

[Holger Just]

Hi there,

after half a day of debugging (and subsequently kicking myself), I 
finally noticed that whenever HAProxy (1.5-dev12 in this case) 
encounters an unknown option on a bind line, it will error out with this 
message irregardless of OpenSSL being enabled or not:

[ALERT] 296/194609 (6625) : parsing [/etc/haproxy/haproxy.cfg:40] : 
'bind' only supports the 'transparent', 'accept-proxy', 'defer-accept', 
'name', 'id', 'mss', 'mode', 'uid', 'gid', 'user', 'group' and 
'interface' options.

I thought I went crazy, thinking somehow OpenSSL support would not 
properly compile on a certain system when I only misconfigured it. It 
would be awesome if you could fix that message the cfgparse.c to reflect 
the actually available options. Unfortunately, I'm not versed enough in 
writing C to fix it myself :(

--Holger