Changed from:

-Add float/double boxing

-Fix selector boxing. It was calling +[Symbol SymbolForCString:] with a SEL. I added a new method, +[Symbol SymbolForSelector:] (which may be redundant since there is already -initWithSelector, but it's easier to call from LLVM, I think). One thing I'm not sure about is whether the +[Symbol SymbolForCString:] and +[Symbol SymbolForSelector:] methods should autorelease the returned Symbol - it looks they never get released right now.

-Deleted a copy of Symbol.m from Smalltalk/Support (it looks like it was left there by accident)

-Modify the NSRect, NSPoint, NSRange boxing to use getGlobalVariable to get the cached NSValue class rather than using Runtime->LookupClass

Changed to:

-Add float/double boxing

-Fix selector boxing. It was calling +[Symbol SymbolForCString:] with a SEL. I added a new method, +[Symbol SymbolForSelector:] (which may be redundant since there is already -initWithSelector, but it's easier to call from LLVM, I think).

-Deleted a copy of Symbol.m from Smalltalk/Support (it looks like it was left there by accident)

-Modify the NSRect, NSPoint, NSRange boxing to use getGlobalVariable to get the cached NSValue class rather than using Runtime->LookupClass

-I'm not convinced the boxing for "unknown" types (the default: case in BoxValue) works, but it now calls CreateLoad on the NSValue class. (Not calling CreateLoad was the cause of the weird behaviour I was having.)