Repair the broken --enable-oldapps option

src/main.c

@@ -365,6 +365,12 @@ com_snsave(wordlist *wl)
     NG_IGNORE(wl);
 }
 
+void
+com_optran(wordlist *wl)
+{
+    NG_IGNORE(wl);
+}
+
 void
 SMPprint(SMPmatrix *n1, char *n2)
 {
@@ -428,6 +434,12 @@ EVTswitch_plot(CKTcircuit* ckt, const char* plottypename)
     return 1;
 };
 
+void
+EVTsave(wordlist* wl)
+{
+    NG_IGNORE(wl);
+}
+
 int
 load_opus(const char *name)
 {

src/ngsconvert.c

@@ -38,6 +38,7 @@ struct plot *plot_cur = NULL;
 int  cp_maxhistlength = 0;
 bool cp_no_histsubst = FALSE;
 struct compat newcompat;
+bool cx_degrees = FALSE;
 
 char *cp_program = "sconvert";