IPA-SAM: Fix build with samba 4.4
samba_util.h is not shipped with samba-4.4
and it was indirectly included by "ndr.h"
Some functions have prototypes in different header file
"util/talloc_stack.h" and other does not have declarations
in other header file. But they are still part of libsamba-util.so
sh$ objdump -T /usr/lib64/libsamba-util.so.0.0.1 | grep -E "trim_s|xstrdup"
0000000000022200 g DF .text 000000000000001f SAMBA_UTIL_0.0.1 smb_xstrdup
00000000000223b0 g DF .text 000000000000019d SAMBA_UTIL_0.0.1 trim_string
ipa_sam.c: In function 'ldapsam_uid_to_sid':
ipa_sam.c:836:24: warning: implicit declaration of function 'talloc_stackframe'
[-Wimplicit-function-declaration]
TALLOC_CTX *tmp_ctx = talloc_stackframe();
^
ipa_sam.c: In function 'pdb_init_ipasam':
ipa_sam.c:4493:2: warning: implicit declaration of function 'trim_string'
[-Wimplicit-function-declaration]
trim_string( uri, "\"", "\"" );
^
ipa_sam.c:4580:26: warning: implicit declaration of function 'smb_xstrdup'
[-Wimplicit-function-declaration]
ldap_state->domain_dn = smb_xstrdup(dn);
^
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>