Changed configure.in, makeinclude, and src/Makefile to use DSOCOMMAND
instead of replacing LIBCOMMAND.
src/Makefile now creates both static and shared libraries if
--enable-shared is requested.
fluid/Makefile always uses the static library so that a CVS build will
always work, even if libfltk.so.1 isn't installed (problem for Solaris
and Linux, which don't support LD_LIBRARY_PATH).
git-svn-id: file:///fltk/svn/fltk/trunk@387 ea41ed52-d2ee-0310-a9c1-e6b18d33e121