Routine bug-fix update to new version.

ChangeLog:

        - Fixup plain input to cache-update so now it should cope
          with any file or directory in the ports tree, and
          directories need not have trailing '/' appended.  Assumes
          two level ports heirarchy.

        - 'use warnings' means '-w' is redundant

        - Documentation improvements

        - Match WWW: tags in pkg-descr even if they have leading
          whitespace

        - Fix dependency accumulation /again!/

        - Don't bail-out when encountering 'dependency on something
          not a port' -- instead, carry on recursing for all other
          dependencies of that port.

        - Docco improvements suggested by bartsch (at) dssgmbh.de

        - Make the %Config array a package global in
          FreeBSD::Portindex::Config, and export it from there as
          required.  No need to say '$::Config{FooBar}' in
          .portindexrc (although that still worlks).  Plain
          $Config{FooBar} now preferred.

        - Improved handling of some port errors.  Setting
          eg. JAVA_VENDOR in the make environment will result in
          certain ports producing bogus dependency data.  Detect this
          and emit warning messages at cache-{init,update} time.

        - Regularize paths in the pkg-descr (5th) field of the
          generated INDEX.  No more '../..'