Remove WWW entries moved into port Makefiles
Commit b7f05445c00f has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.
This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.
Approved by: portmgr (tcberner)
Update to 0.6.31 (new upstream) and unbreak with Ruby 1.9.
PR: ports/163846 (with slight fixes)
Submitted by: Shin-ya Murakami <murashin@gfd-dennou.org>