patch 8.2.1898: command modifier parsing always uses global cmdmod

Problem:    Command modifier parsing always uses global cmdmod.
Solution:   Pass in cmdmod_T to use.  Rename struct fields consistently.
diff --git a/src/option.c b/src/option.c
index dbb086d..935a325 100644
--- a/src/option.c
+++ b/src/option.c
@@ -1125,7 +1125,7 @@
     else if (eap->cmdidx == CMD_setglobal)
 	flags = OPT_GLOBAL;
 #if defined(FEAT_EVAL) && defined(FEAT_BROWSE)
-    if (cmdmod.browse && flags == 0)
+    if ((cmdmod.cmod_flags & CMOD_BROWSE) && flags == 0)
 	ex_options(eap);
     else
 #endif
@@ -5774,7 +5774,7 @@
 	    buf->b_p_ml_nobin = p_ml_nobin;
 	    buf->b_p_inf = p_inf;
 	    COPY_OPT_SCTX(buf, BV_INF);
-	    if (cmdmod.noswapfile)
+	    if (cmdmod.cmod_flags & CMOD_NOSWAPFILE)
 		buf->b_p_swf = FALSE;
 	    else
 	    {