[BUG?] Exported private symbols in audit-userspace

[Yuri Gribov]

Hi,

Is there a reason for functions below to not be marked as hidden? They
are not present in audit's public headers so technically there's no
reason to export them from shlibs. I can see that some symbols (e.g.
`audit_strsplit_r`) were marked as hidden before but then exported in
https://github.com/linux-audit/audit-userspace/commit/aa4ed834b7db2f8c7c929bbec9750a6285cf5e39#diff-6085c87000f8d0b00a22de1631168e4e

_audit_archadded
_audit_elf
_audit_exeadded
_audit_filterfsadded
audit_msg
_audit_permadded
__audit_send
audit_send
audit_strsplit
audit_strsplit_r
_audit_syscalladded
auparse_do_interpretation
_auparse_free_interpretations
auparse_interp_adjust_type
_auparse_load_interpretations
_auparse_lookup_interpretation
__bss_start
check_lru_cache
compute_subject_key
destroy_lru
_edata
_end
_fini
_init
init_lru
lru_evict

The issue was found using ShlibVisibilityChecker
(https://github.com/yugr/ShlibVisibilityChecker).

Best regards,
Yury Gribov