(svn r1440) -Feature: Allows more flexible airport layouts now, as the number of

terminals in every group can be freely chosen
-Codechange: AT_OILRIG is now 15, so that new airports can be added
easily.

airport.h

@@ -13,7 +13,7 @@ enum {
 	AT_HELIPORT = 2,
 	AT_METROPOLITAN = 3,
 	AT_INTERNATIONAL = 4,
-	AT_OILRIG = 5
+	AT_OILRIG = 15
 };
 
 // do not change unless you change v->subtype too. This aligns perfectly with its current setting
@@ -26,10 +26,8 @@ enum {
 // Finite sTate mAchine --> FTA
 typedef struct AirportFTAClass {
 	byte nofelements;							// number of positions the airport consists of
-	byte nofterminals;						// number of terminals this airport has
-	byte nofterminalgroups;				// terminals belong to so many groups (MAX is the nofterminals)
-	byte nofhelipads;							// number of helipads this airport has
-	byte nofhelipadgroups;				// helipads belong to so many groups (MAX is the nofhelipads)
+	const byte *terminals;
+	const byte *helipads;
 	byte entry_point;							// when an airplane arrives at this airport, enter it at position entry_point
 	byte acc_planes;							// accept airplanes or helicopters or both
 	const TileIndexDiffC *airport_depots;	// gives the position of the depots on the airports