Sync mbed-client-cli files with v0.4.0

Sync mbed-client-cli with master repo v0.4.0.

features/frameworks/mbed-client-cli/mbed-client-cli/ns_cmdline.h

@@ -129,7 +129,7 @@ uint8_t cmd_history_size(uint8_t max);
  *  \param fmt   console print function (like printf)
  */
 #if defined(__GNUC__) || defined(__CC_ARM)
-void cmd_printf(const char *fmt, ...)  __attribute__ ((__format__(__printf__, 1, 2)));
+void cmd_printf(const char *fmt, ...)  __attribute__((__format__(__printf__, 1, 2)));
 #else
 void cmd_printf(const char *fmt, ...);
 #endif
@@ -139,7 +139,7 @@ void cmd_printf(const char *fmt, ...);
  *  \param ap   list of parameters needed by format string. This must correspond properly with the conversion specifier.
  */
 #if defined(__GNUC__) || defined(__CC_ARM)
-void cmd_vprintf(const char *fmt, va_list ap)  __attribute__ ((__format__(__printf__, 1, 0)));
+void cmd_vprintf(const char *fmt, va_list ap)  __attribute__((__format__(__printf__, 1, 0)));
 #else
 void cmd_vprintf(const char *fmt, va_list ap);
 #endif
@@ -273,6 +273,26 @@ void cmd_alias_add(const char *alias, const char *value);
  * \param value     Value for variable. Values can contains white spaces and '"' or '"' characters.
  */
 void cmd_variable_add(char *variable, char *value);
+/**
+ * Add integer variable to interpreter.
+ * Variables are replaced with values before executing a command.
+ * \code
+   cmd_variable_add_int("world", 2);
+   cmd_exe("echo $world"); // this is now same as 'echo 2' .
+ * \endcode
+ * \param variable  Variable name, which will be replaced in interpreter.
+ * \param value     Value for variable
+
+ */
+void cmd_variable_add_int(char *variable, int value);
+/**
+ * Request screen size from host
+ * Response are stored to variables:
+ * COLUMNS and LINES - as integer values.
+ * Note: Require terminal that handle request codes, like screen.
+ */
+void cmd_request_screen_size(void);
+
 
 /** find command parameter index by key.
  * e.g.