Don't print the entire declaration of the alliassee when `->toChars()` is called on an `AliasDeclaration`; just printing the name will do. This fixes #305, which otherwise tries to generate {{{ class E { void A() { alias /* recurse into E->toCBuffer() */ m; } } }}} by way of an infinite recursion (causing a segfault when the stack runs out).

#ifndef LDC_GEN_TYPEINF_H
#define LDC_GEN_TYPEINF_H

void DtoResolveTypeInfo(TypeInfoDeclaration* tid);
void DtoDeclareTypeInfo(TypeInfoDeclaration* tid);
void DtoConstInitTypeInfo(TypeInfoDeclaration* tid);

#endif