In AC_LBL_C_INIT, don't explicitly set V_CCOPT, just set $1, as is done

In AC_LBL_C_INIT, don't explicitly set V_CCOPT, just set $1, as is done
elsewhere in the macro.

For the Alpha C compiler, don't set -std1 unless it's necessary for ANSI
mode - we don't want to limit the compiler only to C89 features and,
more importantly, C89 headers (<inttypes.h> doesn't work, on at least
some versions of Digital UNIX and some C compiler versions, with -std1).