- Changed name of BB_FEATURE_SIMPLE_PROMPT to BB_FEATURE_SH_SIMPLE_PROMPT

- Set BB_FEATURE_SH_STANDALONE_SHELL and BB_FEATURE_SH_APPLETS_ALWAYS_WIN to
   be off by default
 - Set BB_FEATURE_SH_SIMPLE_PROMPT to be on by default
 - Added some more magic to the Olympus section to make all the dependencies
   on the shell, cmdline editing, tab completion and friend work properly.
 - Tidied up the Olympus section with some whitespace. Checked the various
   scrips that parse through there and the extra whitespace shouldn't break
   anything.

shell/lash.c

@@ -440,7 +440,7 @@ static int builtin_export(struct child_prog *child)
 	res = putenv(v);
 	if (res)
 		fprintf(stderr, "export: %m\n");
-#ifndef BB_FEATURE_SIMPLE_PROMPT
+#ifndef BB_FEATURE_SH_SIMPLE_PROMPT
 	if (strncmp(v, "PS1=", 4)==0)
 		PS1 = getenv("PS1");
 	else if (strncmp(v, "PS2=", 4)==0)
@@ -805,7 +805,7 @@ static void restore_redirects(int squirrel[])
 
 static inline void cmdedit_set_initial_prompt(void)
 {
-#ifdef BB_FEATURE_SIMPLE_PROMPT
+#ifdef BB_FEATURE_SH_SIMPLE_PROMPT
 	PS1 = NULL;
 	PS2 = "> ";
 #else
@@ -821,7 +821,7 @@ static inline void cmdedit_set_initial_prompt(void)
 
 static inline void setup_prompt_string(char **prompt_str)
 {
-#ifdef BB_FEATURE_SIMPLE_PROMPT
+#ifdef BB_FEATURE_SH_SIMPLE_PROMPT
 	/* Set up the prompt */
 	if (shell_context == 0) {
 		if (PS1)