update SDLMain.m/.h to latest version
rename cNearBlackColor to cNearBlackColorChannels for readability
merge tunsetborder.inc in uLandGraphics.pas
#import <UIKit/UIKit.h>
const char* get_documents_path() {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex: 0];
const char* path = [documentsDirectory UTF8String];
return path;
}