allow for vhost alias dir

dir_alias for alias dir
added setenv var
updated ignore file
added header append P3P
location match added

i,e locationmatch = "^/.cgi"
added location match optopns

i.e
locationmatch_options    => '',
locationmatch_sethandler => '',
locationmatch_allow      => 'from all',
syntax
added ServerSignature

i,e
serversignature          => 'On',
defaults to off
added rewrite mod
stuff
st