Apply a patch from Larry Doolittle to add "-all" and "-none" switches

to multibuild.pl.  I did a little formatting adjustments to make it
_very_ obvious when things stop working.  I also removed the USE_PROCFS
config option -- just do the right thing when USE_DEVPS_PATCH is enabled.
 -Erik

sh.c

@@ -1371,7 +1371,7 @@ static int pseudo_exec(struct child_prog *child)
 	struct built_in_command *x;
 #ifdef BB_FEATURE_SH_STANDALONE_SHELL
 	struct BB_applet *applet;
-	const char *name;
+	char *name;
 #endif
 
 	/* Check if the command matches any of the non-forking builtins.