Various warning cleanups

apps/app_record.c

astman/astman.c

codecs/lpc10/pitsyn.c

codecs/lpc10/voicin.c

db1-ast/btree/bt_delete.c

db1-ast/btree/bt_put.c

db1-ast/btree/bt_seq.c

db1-ast/btree/bt_split.c

db1-ast/hash/hash_buf.c

db1-ast/hash/hash_page.c

db1-ast/recno/rec_open.c

editline/term.c

utils/astman.c