(default_compilers): Remove rule for ".ada".

Pass .ads or .adb suffix to -dumpbase, depending on input filename.

From-SVN: r9025

gcc/gcc.c

@@ -778,10 +778,10 @@ static struct compiler default_compilers[] =
 		    %{!pipe:%g.s} %A\n }}}}"},
   {".ads", "@ada"},
   {".adb", "@ada"},
-  {".ada", "@ada"},
   {"@ada",
    "%{!M:%{!MM:%{!E:gnat1 %{k8:-gnatk8} %{w:-gnatws} %{!Q:-quiet}\
-			   -dumpbase %b.ada %{g*} %{O*} %{p} %{pg:-p} %{f*}\
+			  -dumpbase %{.adb:%b.adb}%{.ads:%b.ads}\
+			  %{g*} %{O*} %{p} %{pg:-p} %{f*}\
 			  %{d*}\
 			  %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
 			  %i %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\