patch 8.1.1982: more functions can be used as methods

Problem:    More functions can be used as methods.
Solution:   Make popup functions usable as a method.
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 4fbecc3..784132f 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -633,26 +633,26 @@
     {"perleval",	1, 1, 0,	  f_perleval},
 #endif
 #ifdef FEAT_TEXT_PROP
-    {"popup_atcursor",	2, 2, 0,	  f_popup_atcursor},
-    {"popup_beval",	2, 2, 0,	  f_popup_beval},
+    {"popup_atcursor",	2, 2, FEARG_1,	  f_popup_atcursor},
+    {"popup_beval",	2, 2, FEARG_1,	  f_popup_beval},
     {"popup_clear",	0, 0, 0,	  f_popup_clear},
-    {"popup_close",	1, 2, 0,	  f_popup_close},
-    {"popup_create",	2, 2, 0,	  f_popup_create},
-    {"popup_dialog",	2, 2, 0,	  f_popup_dialog},
+    {"popup_close",	1, 2, FEARG_1,	  f_popup_close},
+    {"popup_create",	2, 2, FEARG_1,	  f_popup_create},
+    {"popup_dialog",	2, 2, FEARG_1,	  f_popup_dialog},
     {"popup_filter_menu", 2, 2, 0,	  f_popup_filter_menu},
     {"popup_filter_yesno", 2, 2, 0,	  f_popup_filter_yesno},
     {"popup_findinfo",	0, 0, 0,	  f_popup_findinfo},
     {"popup_findpreview", 0, 0, 0,	  f_popup_findpreview},
-    {"popup_getoptions", 1, 1, 0,	  f_popup_getoptions},
-    {"popup_getpos",	1, 1, 0,	  f_popup_getpos},
-    {"popup_hide",	1, 1, 0,	  f_popup_hide},
+    {"popup_getoptions", 1, 1, FEARG_1,	  f_popup_getoptions},
+    {"popup_getpos",	1, 1, FEARG_1,	  f_popup_getpos},
+    {"popup_hide",	1, 1, FEARG_1,	  f_popup_hide},
     {"popup_locate",	2, 2, 0,	  f_popup_locate},
-    {"popup_menu",	2, 2, 0,	  f_popup_menu},
-    {"popup_move",	2, 2, 0,	  f_popup_move},
-    {"popup_notification", 2, 2, 0,	  f_popup_notification},
-    {"popup_setoptions", 2, 2, 0,	  f_popup_setoptions},
-    {"popup_settext",	2, 2, 0,	  f_popup_settext},
-    {"popup_show",	1, 1, 0,	  f_popup_show},
+    {"popup_menu",	2, 2, FEARG_1,	  f_popup_menu},
+    {"popup_move",	2, 2, FEARG_1,	  f_popup_move},
+    {"popup_notification", 2, 2, FEARG_1, f_popup_notification},
+    {"popup_setoptions", 2, 2, FEARG_1,	  f_popup_setoptions},
+    {"popup_settext",	2, 2, FEARG_1,	  f_popup_settext},
+    {"popup_show",	1, 1, FEARG_1,	  f_popup_show},
 #endif
 #ifdef FEAT_FLOAT
     {"pow",		2, 2, FEARG_1,	  f_pow},