Fix keypad mode and cursor mode

Keypad mode is used for detecting when keys in the auxiliary keypad are
pressed, while cursor mode is used for detecting when a cursor is pressed,
but they are different modes.

St was mixing both modes and DECPAM and DECPNM modified the cursor mode, and
this was incorrect.
---
 st.c    |    5 +++--
 st.info |    4 ++--
 2 files changed, 5 insertions(+), 4 deletions(-)

1 files changed, 3 insertions, 2 deletions

diff --git a/st.c b/st.c
index 8bf9337..683a0e9 100644
--- a/st.c
+++ b/st.c
@@ -121,7 +121,8 @@ enum term_mode {
         MODE_REVERSE     = 128,
         MODE_KBDLOCK     = 256,
         MODE_HIDE        = 512,
-        MODE_ECHO        = 1024
+        MODE_ECHO        = 1024,
+        MODE_APPCURSOR   = 2048
 };
 
 enum escape_state {
@@ -1471,7 +1472,7 @@ tsetmode(bool priv, bool set, int *args, int narg) {
                         switch(*args) {
                                 break;
                         case 1: /* DECCKM -- Cursor key */
-                                MODBIT(term.mode, set, MODE_APPKEYPAD);
+                                MODBIT(term.mode, set, MODE_APPCURSOR);
                                 break;
                         case 5: /* DECSCNM -- Reverse video */
                                 mode = term.mode;