add missing vim modelines

Signed-off-by: Julien Danjou <julien@danjou.info>

hooks.c

@@ -217,3 +217,5 @@ const struct luaL_reg awesome_hooks_lib[] =
     { "exit", luaA_hooks_exit },
     { NULL, NULL }
 };
+
+// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80

key.c

@@ -1214,3 +1214,5 @@ key_class_setup(lua_State *L)
                             (lua_class_propfunc_t) luaA_key_get_modifiers,
                             (lua_class_propfunc_t) luaA_key_set_modifiers);
 }
+
+// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80

key.h

@@ -52,3 +52,5 @@ int luaA_pushmodifiers(lua_State *, uint16_t);
 uint16_t luaA_tomodifiers(lua_State *L, int ud);
 
 #endif
+
+// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80

keygrabber.c

@@ -136,3 +136,5 @@ const struct luaL_reg awesome_keygrabber_lib[] =
     { "stop", luaA_keygrabber_stop },
     { NULL, NULL }
 };
+
+// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80

mousegrabber.c

@@ -140,3 +140,5 @@ const struct luaL_reg awesome_mousegrabber_lib[] =
     { "stop", luaA_mousegrabber_stop },
     { NULL, NULL }
 };
+
+// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80

selection.c

@@ -115,3 +115,5 @@ luaA_selection_get(lua_State *L)
     p_delete(&event);
     return 0;
 }
+
+// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80