[svn r305] Started support for custom class allocators/deallocators. Allocators with more than one argument still need to be fixed. Removed the LLVM stacktrace code from mars.c. Moved the LLVM based default target detection code from mars.c to llvmhelpers.cpp.

#ifndef LLVMDC_GEN_AA_H
#define LLVMDC_GEN_AA_H

DValue* DtoAAIndex(Type* type, DValue* aa, DValue* key);
DValue* DtoAAIn(Type* type, DValue* aa, DValue* key);
void DtoAARemove(DValue* aa, DValue* key);

#endif // LLVMDC_GEN_AA_H