hush: make set -x support optional

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

shell/Config.src

@@ -110,112 +110,6 @@ config ASH_EXPAND_PRMT
 	  This option recreates the prompt string from the environment
 	  variable each time it is displayed.
 
-config HUSH
-	bool "hush"
-	default y
-	help
-	  hush is a small shell (22k). It handles the normal flow control
-	  constructs such as if/then/elif/else/fi, for/in/do/done, while loops,
-	  case/esac. Redirections, here documents, $((arithmetic))
-	  and functions are supported.
-
-	  It will compile and work on no-mmu systems.
-
-	  It does not handle select, aliases, brace expansion,
-	  tilde expansion, &>file and >&file redirection of stdout+stderr.
-
-config HUSH_BASH_COMPAT
-	bool "bash-compatible extensions"
-	default y
-	depends on HUSH
-	help
-	  Enable bash-compatible extensions.
-
-config HUSH_HELP
-	bool "help builtin"
-	default y
-	depends on HUSH
-	help
-	  Enable help builtin in hush. Code size + ~1 kbyte.
-
-config HUSH_INTERACTIVE
-	bool "Interactive mode"
-	default y
-	depends on HUSH
-	help
-	  Enable interactive mode (prompt and command editing).
-	  Without this, hush simply reads and executes commands
-	  from stdin just like a shell script from a file.
-	  No prompt, no PS1/PS2 magic shell variables.
-
-config HUSH_JOB
-	bool "Job control"
-	default y
-	depends on HUSH_INTERACTIVE
-	help
-	  Enable job control: Ctrl-Z backgrounds, Ctrl-C interrupts current
-	  command (not entire shell), fg/bg builtins work. Without this option,
-	  "cmd &" still works by simply spawning a process and immediately
-	  prompting for next command (or executing next command in a script),
-	  but no separate process group is formed.
-
-config HUSH_TICK
-	bool "Process substitution"
-	default y
-	depends on HUSH
-	help
-	  Enable process substitution `command` and $(command) in hush.
-
-config HUSH_IF
-	bool "Support if/then/elif/else/fi"
-	default y
-	depends on HUSH
-	help
-	  Enable if/then/elif/else/fi in hush.
-
-config HUSH_LOOPS
-	bool "Support for, while and until loops"
-	default y
-	depends on HUSH
-	help
-	  Enable for, while and until loops in hush.
-
-config HUSH_CASE
-	bool "Support case ... esac statement"
-	default y
-	depends on HUSH
-	help
-	  Enable case ... esac statement in hush. +400 bytes.
-
-config HUSH_FUNCTIONS
-	bool "Support funcname() { commands; } syntax"
-	default y
-	depends on HUSH
-	help
-	  Enable support for shell functions in hush. +800 bytes.
-
-config HUSH_LOCAL
-	bool "Support local builtin"
-	default y
-	depends on HUSH_FUNCTIONS
-	help
-	  Enable support for local variables in functions.
-
-config HUSH_EXPORT_N
-	bool "Support export '-n' option"
-	default y
-	depends on HUSH
-	help
-	  Enable support for export '-n' option in hush. It is a bash extension.
-
-config HUSH_RANDOM_SUPPORT
-	bool "Pseudorandom generator and $RANDOM variable"
-	default y
-	depends on HUSH
-	help
-	  Enable pseudorandom generator and dynamic variable "$RANDOM".
-	  Each read of "$RANDOM" will generate a new pseudorandom value.
-
 
 choice
 	prompt "Choose which shell is aliased to 'sh' name"