* elaborate.h (struct derived_probe_group): Added
emit_module_header virtual function.
* translate.cxx (c_unparser::emit_common_header): Calls each probe
group's emit_module_header function.
(translate_pass): Moved inclusion of linux/marker.h to
mark_derived_probe_group::emit_module_header().
* tapsets.cxx (struct be_derived_probe_group): Added empty
emit_module_header function.
(struct timer_derived_probe_group): Ditto.
(struct profile_derived_probe_group): Ditto.
(struct procfs_derived_probe_group): Ditto.
(struct hrtimer_derived_probe_group): Ditto.
(struct perfmon_derived_probe_group): Ditto.
(dwarf_derived_probe_group::emit_module_header): Moved kprobes
kernel check from emit_module_decls() to here.
(uprobe_derived_probe_group::emit_module_header): Moved uprobe
kernel check from emit_module_decls() to here.
(uprobe_derived_probe_group::emit_module_decls): Moved uprobe
kernel check to emit_module_header().
(mark_derived_probe_group::emit_module_header): Moved marker
kernel check from emit_module_decls and translate_pass() to here.
(uprobe_derived_probe_group::emit_module_decls): Moved marker
kernel check to emit_module_header().