Upgrade to apache-openoffice SVN revision 1667428.
Word around broken build on FreeBSD 11.0-CURRENT i386, which appears
to be a code generation bug in clang 3.6 when using -Os optimization.
Build using the ports version of graphics/silgraphite instead of
building an internal copy.
When building with clang, use the ports version of devel/boost-libs
instead of an internal copy.
Use the dictionaries already installed by ports.
Update the patch-bridges and patch-*.mk patches to versions that
will be sent upstream. The latter are tuned for clang to use as
is, with only some minor additional tweaks needed for gcc.
Nuke patch-webdav because it has been incorporated upstream.
Wordsmith pkg-message.
Various Makefile cleanups.
Differential Revision: https://reviews.freebsd.org/D2108
Reviewed by: pfg
Approved by: mat (mentor)