Collect all symbol tables in new symbol.c. No functional changes.

src/lib/global/news.c

@@ -45,22 +45,6 @@
 #include "news.h"
 #include "nsc.h"
 
-struct symbol page_headings[] = {
-    {N_NOTUSED, "Comics"},
-    {N_FOR, "Foreign Affairs"},
-    {N_FRONT, "The Front Line"},
-    {N_SEA, "The High Seas"},
-    {N_SKY, "Sky Watch"},
-    {N_MISS, "Guidance Systems"},
-    {N_ARTY, "Firestorms"},
-    {N_ECON, "Business & Economics"},
-    {N_COLONY, "The Frontier"},
-    {N_HOME, "The Home Front"},
-    {N_SPY, "Espionage"},
-    {N_TELE, "Telecommunications"},
-    {0, NULL}
-};
-
 static char no_news[] = "does nothing in particular to %s";
 
 struct rptstr rpt[] = {