patch 8.2.4903: cannot get the current cmdline completion type and position

Problem:    Cannot get the current cmdline completion type and position.
Solution:   Add getcmdcompltype() and getcmdscreenpos(). (Shougo Matsushita,
            closes #10344)
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 55041b9..219751b 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -1850,10 +1850,14 @@
 			ret_dict_any,	    f_getcharsearch},
     {"getcharstr",	0, 1, 0,	    arg1_bool,
 			ret_string,	    f_getcharstr},
+    {"getcmdcompltype",	0, 0, 0,	    NULL,
+			ret_string,	    f_getcmdcompltype},
     {"getcmdline",	0, 0, 0,	    NULL,
 			ret_string,	    f_getcmdline},
     {"getcmdpos",	0, 0, 0,	    NULL,
 			ret_number,	    f_getcmdpos},
+    {"getcmdscreenpos",	0, 0, 0,	    NULL,
+			ret_number,	    f_getcmdscreenpos},
     {"getcmdtype",	0, 0, 0,	    NULL,
 			ret_string,	    f_getcmdtype},
     {"getcmdwintype",	0, 0, 0,	    NULL,