removed compile errors in 2.1 build

+#include <unistd.h>
+
 #import "FMDatabase.h"
 
 @implementation FMDatabase

+#include <unistd.h>
+
 #import "FMResultSet.h"
 #import "FMDatabase.h"
 

@@ -7,6 +7,8 @@
 //
 
 #import <Foundation/Foundation.h>
+#import <CoreGraphics/CoreGraphics.h>
+
 #import "RMFoundation.h"
 
 @class CALayer;

@@ -7,8 +7,11 @@
 //
 
 #import <Foundation/Foundation.h>
+#import <CoreGraphics/CoreGraphics.h>
+
 #import "RMFoundation.h"
 
+
 // This is a stateful projection. As the screen moves around, so too do projections change.
 
 @interface RMMercatorToScreenProjection : NSObject