[Driver][ClassicFlang] Add options -fno-automatic and -f(no-)implicit-none

These three options are added in release_12. When compiling programs
with them using Classic Flang, there are only warnings generated. They
are removed now so that the errors of "unknown argument" are reported.
Add these options in Driver for compatibility reason. Please note that
these options are not implemented yet in Classic Flang.

Author: PeixinQiao

clang/include/clang/Driver/Options.td

@@ -6747,6 +6747,10 @@ def fbackslash : Flag<["-"], "fbackslash">, Group<gfortran_Group>,
   DocBrief<[{Change the interpretation of backslashes in string literals from
 a single backslash character to "C-style" escape characters.}]>;
 def fno_backslash : Flag<["-"], "fno-backslash">, Group<gfortran_Group>;
+// Add the options -f(no-)implicit-none and -f(no-)automatic for compatibility
+// reason. They are not implemented yet in Classic Flang for now.
+defm implicit_none : BooleanFFlag<"implicit-none">, Group<gfortran_Group>;
+def fno_automatic : Flag<["-"], "fno-automatic">, Group<gfortran_Group>;
 #else
 defm backslash : OptInFC1FFlag<"backslash", "Specify that backslash in string introduces an escape character">;
 defm xor_operator : OptInFC1FFlag<"xor-operator", "Enable .XOR. as a synonym of .NEQV.">;