knobs; resurrect documentation/Makefile patch; bring back recalculation of
${ETCDIR} length in Fl_Preferences.cxx, trim CONFIGURE_ARGS (again), etc.
- Restore correct LDFLAGS+= -L../src (previously -L${WRKSRC}/src), otherwise
the build fails with e.g. previous version of FLTK libraries installed
- Take maintainership to prevent Kato's monkeys jeopardizing it all over again
- Install code examples as PORTEXAMPLES (we do not install any documentation
because it requires LaTeX stack to build)
- Since `post-patch' target is a bit too verbose now, make it .SILENT
- Do not compile things with -Os by default (already honors user's CXXFLAGS)
- Do not blindly strip libraries and fluid(1) binary (respect ${STRIP} value)