Copy-pasted workaround for building against MacOSX 10.6 SDK but with 10.4 as the highest used API

Yeah, should really factor out this snippet into some header file. It
is already in premac.h, but I think premac.h can't be included as such
in all the places where this copy-pasted snippet now is. Need to
experiment.

extensions/source/macosx/spotlight/GetMetadataForFile.m

@@ -26,6 +26,13 @@
  *
 *************************************************************************/
 
+#import <Foundation/NSObjCRuntime.h>
+#if defined (NSFoundationVersionNumber10_5) &&  MAC_OS_X_VERSION_MAX_ALLOWED < 1050
+@class CALayer;
+@class NSViewController;
+typedef int NSColorRenderingIntent;
+#endif
+
 #include <CoreFoundation/CoreFoundation.h>
 #include <CoreServices/CoreServices.h> 
 #include <Foundation/Foundation.h>

extensions/source/macosx/spotlight/OOoContentDataParser.m

@@ -26,6 +26,13 @@
  *
 *************************************************************************/
 
+#import <Foundation/NSObjCRuntime.h>
+#if defined (NSFoundationVersionNumber10_5) &&  MAC_OS_X_VERSION_MAX_ALLOWED < 1050
+@class CALayer;
+@class NSViewController;
+typedef int NSColorRenderingIntent;
+#endif
+
 #import "OOoContentDataParser.h"
 
 @implementation OOoContentDataParser

extensions/source/macosx/spotlight/OOoMetaDataParser.m

@@ -26,6 +26,13 @@
  *
 *************************************************************************/
 
+#import <Foundation/NSObjCRuntime.h>
+#if defined (NSFoundationVersionNumber10_5) &&  MAC_OS_X_VERSION_MAX_ALLOWED < 1050
+@class CALayer;
+@class NSViewController;
+typedef int NSColorRenderingIntent;
+#endif
+
 #import "OOoMetaDataParser.h"
 
 static NSSet *singleValueXMLElements;

extensions/source/macosx/spotlight/OOoSpotlightImporter.m

@@ -26,6 +26,13 @@
  *
 *************************************************************************/
 
+#import <Foundation/NSObjCRuntime.h>
+#if defined (NSFoundationVersionNumber10_5) &&  MAC_OS_X_VERSION_MAX_ALLOWED < 1050
+@class CALayer;
+@class NSViewController;
+typedef int NSColorRenderingIntent;
+#endif
+
 #import "OOoSpotlightImporter.h"
 #import "OOoMetaDataParser.h"
 #import "OOoContentDataParser.h"