gcc: change "-stage-static" to "-nolibc" and "-stage-final" to ""

This commit changes the target suffix for the first-stage cross
compiler from `-stage-static` to `-nolibc`, and eliminates the
target suffix from the final-stage cross compiler (previously
`-stage-final`).

Co-authored-by: Artturi <Artturin@artturin.com>
Co-authored-by: John Ericson <git@JohnEricson.me>

pkgs/development/compilers/gcc/default.nix

@@ -117,8 +117,8 @@ let inherit version;
 
     /* Cross-gcc settings (build == host != target) */
     crossMingw = targetPlatform != hostPlatform && targetPlatform.isMinGW;
-    stageNameAddon = if withoutTargetLibc then "stage-static" else "stage-final";
-    crossNameAddon = optionalString (targetPlatform != hostPlatform) "${targetPlatform.config}-${stageNameAddon}-";
+    stageNameAddon = optionalString withoutTargetLibc "-nolibc";
+    crossNameAddon = optionalString (targetPlatform != hostPlatform) "${targetPlatform.config}${stageNameAddon}-";
 
     javaAwtGtk = langJava && x11Support;
     xlibs = [