Revert "Implement NSDate as a small object (tagged pointer) - clang/l…

…ibobjc2 only (#451)" because of GUI breakage: apps hang when loading NSMenu

This reverts commit 8fd2c06.

ChangeLog

@@ -15,22 +15,7 @@
 	* Source/NSFileManager.m: Create an NSError object when we fail to
 	copy because the destination item already exists.
 
-2024-10-10: Hugo Melder <[email protected]>
-
-	* Source/NSDate.m:
-	* Source/NSDatePrivate.h:
-	NSDate is now a small object in slot 6, when configuring GNUstep with the
-	clang/libobjc2 toolchain.  This is done by compressing the binary64 fp
-	holding the seconds since reference date (because someone at Apple thought
-	it would be a good idea to represent a time interval as a fp). Note that
-	this assumes that IEEE 754 is used.
-	* Source/NSCalendarDate.m:
-	Remove access to the NSDate private concrete Class
-	and implement -timeIntervalSinceReferenceDate instead.
-	Previously, all methods of the concrete date class were
-	added to NSCalendarDate via GSObjCAddClassBehavior.
-
-2024-23-09: Hugo Melder <[email protected]>
+2024-09-23: Hugo Melder <[email protected]>
 
 	* Headers/Foundation/NSThread.h:
 	* Source/NSString.m:

Source/NSCalendarDate.m

@@ -58,6 +58,9 @@ @interface	GSTimeZone : NSObject	// Help the compiler
 @class	GSAbsTimeZone;
 @interface	GSAbsTimeZone : NSObject	// Help the compiler
 @end
+@class	NSGDate;
+@interface	NSGDate : NSObject	// Help the compiler
+@end
 
 
 #define DISTANT_FUTURE	63113990400.0
@@ -393,6 +396,7 @@ + (void) initialize
       absAbrIMP = (NSString* (*)(id,SEL,id))
 	[absClass instanceMethodForSelector: abrSEL];
 
+      GSObjCAddClassBehavior(self, [NSGDate class]);
       [pool release];
     }
 }
@@ -459,11 +463,6 @@ + (id) dateWithYear: (NSInteger)year
   return AUTORELEASE(d);
 }
 
-- (NSTimeInterval) timeIntervalSinceReferenceDate
-{
-  return _seconds_since_ref;
-}
-
 /**
  * Creates and returns a new NSCalendarDate object by taking the
  * value of the receiver and adding the interval in seconds specified.