Add AM_PROG_CC_C_O so that some versions of autoconf do not complain.
Updated files by running aclocal.
Add missing type to local variable.
Recast output of memmove to char type.
Mark a problem in signal_()
Add type to declared variable.
Fixed signature of z_endp()
Fixed signature of donewrec().
Remove duplicate type qualifier
Fixed signature of i_getc()
Fixed signature of nl_donewrec()