Removed warnings on ignored aligns. Only do aligment on packed structs, align(1) struct Packed { ... }

Changed the way struct/class fields are added, first small part of cleaning up these...
Make struct/class/union fields aware of any anonymous struct/union they might be part of, not yet really useful, but part of getting better union support.

dmd/declaration.c

@@ -621,6 +621,9 @@ VarDeclaration::VarDeclaration(Loc loc, Type *type, Identifier *id, Initializer
     onstack = 0;
     canassign = 0;
     value = NULL;
+
+    // LDC
+    anonDecl = NULL;
 }
 
 Dsymbol *VarDeclaration::syntaxCopy(Dsymbol *s)