Add function key defs up to F48

This allows for the four combinations of shift and control. Not
bothering with alt because alt-f4 closes my xterm (bbkeys from the looks
of it: it grabs a bunch of Mod1-* keys).

include/QF/keys.h

@@ -271,6 +271,39 @@ typedef enum {
 	QFK_F13,
 	QFK_F14,
 	QFK_F15,
+	QFK_F16,
+	QFK_F17,
+	QFK_F18,
+	QFK_F19,
+	QFK_F20,
+	QFK_F21,
+	QFK_F22,
+	QFK_F23,
+	QFK_F24,
+	QFK_F25,
+	QFK_F26,
+	QFK_F27,
+	QFK_F28,
+	QFK_F29,
+	QFK_F30,
+	QFK_F31,
+	QFK_F32,
+	QFK_F33,
+	QFK_F34,
+	QFK_F35,
+	QFK_F36,
+	QFK_F37,
+	QFK_F38,
+	QFK_F39,
+	QFK_F40,
+	QFK_F41,
+	QFK_F42,
+	QFK_F43,
+	QFK_F44,
+	QFK_F45,
+	QFK_F46,
+	QFK_F47,
+	QFK_F48,
 
 	/* Key state modifier keys */
 	QFK_NUMLOCK,

libs/video/targets/keys.c

@@ -312,6 +312,39 @@ keyname_t   keynames[] = {
 	{ "K_F13",			QFK_F13 },
 	{ "K_F14",			QFK_F14 },
 	{ "K_F15",			QFK_F15 },
+	{ "K_F16",			QFK_F16 },
+	{ "K_F17",			QFK_F17 },
+	{ "K_F18",			QFK_F18 },
+	{ "K_F19",			QFK_F19 },
+	{ "K_F20",			QFK_F20 },
+	{ "K_F21",			QFK_F21 },
+	{ "K_F22",			QFK_F22 },
+	{ "K_F23",			QFK_F23 },
+	{ "K_F24",			QFK_F24 },
+	{ "K_F25",			QFK_F25 },
+	{ "K_F26",			QFK_F26 },
+	{ "K_F27",			QFK_F27 },
+	{ "K_F28",			QFK_F28 },
+	{ "K_F29",			QFK_F29 },
+	{ "K_F30",			QFK_F30 },
+	{ "K_F31",			QFK_F31 },
+	{ "K_F32",			QFK_F32 },
+	{ "K_F33",			QFK_F33 },
+	{ "K_F34",			QFK_F34 },
+	{ "K_F35",			QFK_F35 },
+	{ "K_F36",			QFK_F36 },
+	{ "K_F37",			QFK_F37 },
+	{ "K_F38",			QFK_F38 },
+	{ "K_F39",			QFK_F39 },
+	{ "K_F40",			QFK_F40 },
+	{ "K_F41",			QFK_F41 },
+	{ "K_F42",			QFK_F42 },
+	{ "K_F43",			QFK_F43 },
+	{ "K_F44",			QFK_F44 },
+	{ "K_F45",			QFK_F45 },
+	{ "K_F46",			QFK_F46 },
+	{ "K_F47",			QFK_F47 },
+	{ "K_F48",			QFK_F48 },
 	{ "K_NUMLOCK",		QFK_NUMLOCK },
 	{ "K_CAPSLOCK",		QFK_CAPSLOCK },
 	{ "K_SCROLLOCK",	QFK_SCROLLOCK },