Stef Walter authored May 03, 2013 and Quanah Gibson-Mount committed May 24, 2013

ldap_init_fd() tried to handle UDP sockets but was missing
certain key pieces to make it work. Fill in the address and
set the UDP flag correctly.

Howard Chu authored May 23, 2013 and Quanah Gibson-Mount committed May 24, 2013

Allow base entry to be added online with targets
added later. Add SLAP_SERVER_RUNNING flag to note
that main slap_startup has already occurred.

Needed for <resolv.h>, which is needed for BYTE_ORDER.

If updating a page's separator triggers a split in its parent,
we may have missed adjusting the parent's cursor position.

Forgot #include <errno.h>

mdb_txn_begin(): Do not free(mt_free_pgs), it needs mdb_midl_free().
mdb_txn_commit(): Catch commit(child) error.

Do not try to scan me_dbxs in a closed/never-opened MDB_env.
Broken by 7d643d3a
and 151c416b.

No real change.
mdb_cursor_init() checks if it needs mx, so pass it unconditionally.
Set C_ALLOCD for shadow cursors, for clarity. (It was always set as
it should anyway from the origin cursor, which would have C_ALLOCD.)

Unused function when MDB_DEBUG. Unused 'excl' param.

There was little point in returning EINVAL when not: Comparing (A,B)
and (B,A) would claim (A > B && B > A), which could confuse callers.

Catch mdb_cursor_renew(write txn's cursor).  Add flag C_UNTRACK, so
mdb_cursor_close need not peek inside a possibly-freed readonly txn.