index -> indx_t

index -> indx_t

SCCS-vsn: lib/libc/db/btree/bt_conv.c 5.7
SCCS-vsn: lib/libc/db/btree/bt_debug.c 5.7
SCCS-vsn: lib/libc/db/btree/bt_delete.c 5.9
SCCS-vsn: lib/libc/db/btree/bt_get.c 5.8
SCCS-vsn: lib/libc/db/btree/bt_open.c 5.25
SCCS-vsn: lib/libc/db/btree/bt_put.c 5.13
SCCS-vsn: lib/libc/db/btree/bt_search.c 5.9
SCCS-vsn: lib/libc/db/btree/bt_seq.c 5.9
SCCS-vsn: lib/libc/db/btree/bt_split.c 5.12
SCCS-vsn: lib/libc/db/btree/btree.h 5.10