Add -bodylen which creates a synthetic body of the specified length.

Add -bodylen which creates a synthetic body of the specified length.

The generated body is the classic drum-printer test pattern:

	!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_\n
	"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`\n
	#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`a\n
	$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`ab\n

The last char is always a \n

git-svn-id: svn+ssh://projects.linpro.no/svn/varnish/trunk@3173 d4fa192b-c00b-0410-8231-f00ffab90ce4