(lang_options): Sort C++ options and add -f{no-,}external-templates.

From-SVN: r6470

gcc/toplev.c

@@ -604,52 +604,54 @@ char *lang_options[] =
   "-+e0",			/* gcc.c tacks the `-' on the front.  */
   "-+e1",
   "-+e2",
-  "-fsave-memoized",
-  "-fno-save-memoized",
-  "-fcadillac",
-  "-fno-cadillac",
-  "-fgc",
-  "-fno-gc",
-  "-flabels-ok",
-  "-fno-labels-ok",
-  "-fstats",
-  "-fno-stats",
-  "-fthis-is-variable",
-  "-fno-this-is-variable",
-  "-fstrict-prototype",
-  "-fno-strict-prototype",
   "-fall-virtual",
   "-fno-all-virtual",
-  "-fmemoize-lookups",
-  "-fno-memoize-lookups",
-  "-felide-constructors",
-  "-fno-elide-constructors",
-  "-fhandle-exceptions",
-  "-fno-handle-exceptions",
+  "-falt-external-templates",
+  "-fno-alt-external-templates",
   "-fansi-exceptions",
   "-fno-ansi-exceptions",
-  "-fspring-exceptions",
-  "-fno-spring-exceptions",
+  "-fansi-overloading",
+  "-fno-ansi-overloading",
+  "-fcadillac",
+  "-fno-cadillac",
+  "-fconserve-space",
+  "-fno-conserve-space",
   "-fdefault-inline",
   "-fno-default-inline",
-  "-fenum-int-equiv",
-  "-fno-enum-int-equiv",
   "-fdossier",
   "-fno-dossier",
-  "-fxref",
-  "-fno-xref",
-  "-fnonnull-objects",
-  "-fno-nonnull-objects",
-  "-fimplement-inlines",
-  "-fno-implement-inlines",
+  "-felide-constructors",
+  "-fno-elide-constructors",
+  "-fenum-int-equiv",
+  "-fno-enum-int-equiv",
   "-fexternal-templates",
   "-fno-external-templates",
-  "-fansi-overloading",
-  "-fno-ansi-overloading",
+  "-fgc",
+  "-fno-gc",
+  "-fhandle-exceptions",
+  "-fno-handle-exceptions",
   "-fhuge-objects",
   "-fno-huge-objects",
-  "-fconserve-space",
-  "-fno-conserve-space",
+  "-fimplement-inlines",
+  "-fno-implement-inlines",
+  "-flabels-ok",
+  "-fno-labels-ok",
+  "-fmemoize-lookups",
+  "-fno-memoize-lookups",
+  "-fnonnull-objects",
+  "-fno-nonnull-objects",
+  "-fsave-memoized",
+  "-fno-save-memoized",
+  "-fspring-exceptions",
+  "-fno-spring-exceptions",
+  "-fstats",
+  "-fno-stats",
+  "-fstrict-prototype",
+  "-fno-strict-prototype",
+  "-fthis-is-variable",
+  "-fno-this-is-variable",
+  "-fxref",
+  "-fno-xref",
 
   "-Wreturn-type",
   "-Wno-return-type",