haserl: import from packages, update to latest

Signed-off-by: Maxim Storchak <m.storchak@gmail.com>

utils/haserl/Config.in

@@ -0,0 +1,35 @@
+if PACKAGE_haserl
+
+	config HASERL_with_lua
+		bool
+		default n
+
+	comment "Lua support"
+
+	config HASERL_shell_luac
+		bool
+		prompt "Support --shell=luac"
+		select HASERL_with_lua
+		default n
+		help
+			haserl(1):
+			The luac "shell" is a precompiled lua chunk, so interactive
+			editing and testing of scripts is not possible. However,
+			haserl can be compiled with luac support only, and this
+			allows lua support even in a small memory environment. All
+			haserl lua features listed above are still available. (If
+			luac is the only shell built into haserl, the
+			haserl.loadfile is disabled, as the haserl parser is not
+			compiled in.)
+
+	config HASERL_shell_lua
+		bool
+		prompt "Support --shell=lua"
+		select HASERL_with_lua
+		default n
+		help
+			haserl(1):
+			If compiled with lua support, --shell=lua will enable lua as the
+			script language instead of bash shell.
+
+endif