patch 8.2.0779: tmode_T not used everywhere

Problem:    Tmode_T not used everywhere.
Solution:   Also use tmode_T for settmode().

src/proto/term.pro

@@ -41,7 +41,7 @@ void win_new_shellsize(void);
 void shell_resized(void);
 void shell_resized_check(void);
 void set_shellsize(int width, int height, int mustset);
-void settmode(int tmode);
+void settmode(tmode_T tmode);
 void starttermcap(void);
 void stoptermcap(void);
 void may_req_termresponse(void);

src/term.c

@@ -3436,7 +3436,7 @@ set_shellsize(int width, int height, int mustset)
  * commands and Ex mode).
  */
     void
-settmode(int tmode)
+settmode(tmode_T tmode)
 {
 #ifdef FEAT_GUI
     // don't set the term where gvim was started to any mode

src/version.c

@@ -746,6 +746,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    779,
 /**/
     778,
 /**/