The notes() method now returns the new value when called with two
arguments, just like when it's called with one argument. [Tyler
MacDonald]The notes() method now distinguishes among the values undef, 0, and
the empty string, where previously it didn't. [Tyler MacDonald]We now unshift(@INC) rather than push(@INC) for the directory where
a build subclass lives, so that we're sure to pick up the right
version and not some already-installed version. [perlmonkey]The SIGNATURE file for version 0.27_06 (and I'm sure for lots of
versions before that too!) was messed up, since we were modifying
some files after signing. This has been band-aided for the time
being by signing twice. [Reported by Chris Dolan]