* build/ac-macros/swig.m4 (SVN_FIND_SWIG): Do not quote $rbconfig_sitedir inside a quoted and backtick'ed invocation of sed.
This does not work on OpenBSD, where neither m4 nor /bin/sh swallow the extra quotes around $rbconfig_sitedir, causing sed to see " instead of s as the command character. As a result of this problem, ruby bindings where installing stuff in wacky places.
If this breaks things on other platforms, we need a better fix. The only problem I could imagine is people using spaces in their ruby install path, which is a silly thing to do given that these paths are often used by configure scripts written in /bin/sh.