Fix mastersites to make port fetchable:

- remove %SUBDIR% from MASTER_SITE_BERLIOS - it's already in the variable's value

- remove home.pages.de site, not usable with fetch because it uses temporary redirects (HTTP result code 302)
  (we would probably have to fix bsd.port.mk first to allow per-site FETCH_ARGS in the MASTER_SITES:n framework)

- add MASTER_SITE_SUNSITE (6.3.8 has been uploaded, but not yet moved into place)
  which entails setting MASTER_SITE_SUBDIR and DISTFILES

NOTE: WITH_X11 is checked before bsd.port.pre.mk, causing portlint complaints - I've overridden them
for the nonce since fetching is important and the WITH_X11 isn't made worse by my patch at least.

Port maintainer (barner@FreeBSD.org) is cc'd.

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