* dynl.c (DYNL_GLOBAL): New.

* dynl.c (DYNL_GLOBAL): New.
(sysdep_dynl_link): Added `flags' argument.
(kw_global, sym_global): New.
(scm_dynamic_link): Handle keyword arguments.  Pass suitable flags
to sysdep_dynl_link.
* dynl-dl.c (sysdep_dynl_link): Handle new `flags' argument by
conditrionally adding RTLD_GLOBAL to DLOPEN_MODES.
* dynl-shl.c (sysdep_dynl_link): Add and ignore new flags
argument.
* dynl-dld.c (sysdep_dynl_link): Add and ignore new flags
argument.
* dynl.h (scm_dynamic_link): Added rest argument.
* dynl.c (sysdep_dynl_unlink, sysdep_dynl_func): Use const
qualifier for char* argument, to match prototypes.  Thanks to Mark
Elbrecht.