Protect use of dlopen() and dlsym() with HAVE_DLSYM and HAVE_DLFCN_H for compatibility with cases where these functions aren’t available.

git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10348 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Protect use of dlopen() and dlsym() with HAVE_DLSYM and HAVE_DLFCN_H for compatibility with cases where these functions aren’t available.

git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10349 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Protect use of dlopen() with HAVE_DLSYM and HAVE_DLFCN_H for compatibility with cases where this function is not available.

git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10350 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Remove unused htmldoc from autoconf configure options.


git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10351 ea41ed52-d2ee-0310-a9c1-e6b18d33e121