Send both SCO and DEC command for save/restore cursor position (fixes #226) (#262)

Author: gnodet

src/main/java/org/fusesource/jansi/Ansi.java

@@ -716,19 +716,45 @@ public Ansi scrollDown(final int rows) {
         return rows > 0 ? appendEscapeSequence('T', rows) : rows < 0 ? scrollUp(-rows) : this;
     }
 
+    @Deprecated
+    public Ansi restorCursorPosition() {
+        return restoreCursorPosition();
+    }
+
     public Ansi saveCursorPosition() {
+        saveCursorPositionSCO();
+        return saveCursorPositionDEC();
+    }
+
+    // SCO command
+    public Ansi saveCursorPositionSCO() {
         return appendEscapeSequence('s');
     }
 
-    @Deprecated
-    public Ansi restorCursorPosition() {
-        return appendEscapeSequence('u');
+    // DEC command
+    public Ansi saveCursorPositionDEC() {
+        builder.append(FIRST_ESC_CHAR);
+        builder.append('7');
+        return this;
     }
 
     public Ansi restoreCursorPosition() {
+        restoreCursorPositionSCO();
+        return restoreCursorPositionDEC();
+    }
+
+    // SCO command
+    public Ansi restoreCursorPositionSCO() {
         return appendEscapeSequence('u');
     }
 
+    // DEC command
+    public Ansi restoreCursorPositionDEC() {
+        builder.append(FIRST_ESC_CHAR);
+        builder.append('8');
+        return this;
+    }
+
     public Ansi reset() {
         return a(Attribute.RESET);
     }