Send method to class name instead of ‘self’

This avoids potential compiler errors where multiple methods with same signature but different parameter/result types.

Frameworks/OakAppKit/src/OakPasteboard.mm

@@ -292,7 +292,7 @@ namespace
 	static NSMutableDictionary* SharedInstances = [NSMutableDictionary new];
 	if(![SharedInstances objectForKey:aName])
 	{
-		[SharedInstances setObject:[[[self alloc] initWithName:aName] autorelease] forKey:aName];
+		[SharedInstances setObject:[[[OakPasteboard alloc] initWithName:aName] autorelease] forKey:aName];
 		if(![aName isEqualToString:NSGeneralPboard])
 			[[SharedInstances objectForKey:aName] setAvoidsDuplicates:YES];
 	}

Frameworks/OakFilterList/src/OakAbbreviations.mm

@@ -18,7 +18,7 @@ static NSString* const FCExpandedStringKey	= @"long";
 {
 	static NSMutableDictionary* SharedInstances = [NSMutableDictionary new];
 	if(!SharedInstances[aName])
-		SharedInstances[aName] = [[self alloc] initWithName:aName];
+		SharedInstances[aName] = [[OakAbbreviations alloc] initWithName:aName];
 	return SharedInstances[aName];
 }
 

Frameworks/OakFilterList/src/datasources/SymbolChooser.mm

@@ -90,7 +90,7 @@ OAK_DEBUG_VAR(FilterList_SymbolChooser);
 
 + (id)symbolChooserForDocument:(document::document_ptr)aDocument
 {
-	return [[self alloc] initWithDocument:aDocument];
+	return [[SymbolChooser alloc] initWithDocument:aDocument];
 }
 
 - (NSString*)title