* Moved ir/irsymbol.cpp/h into ir/irdsymbol.cpp/h.

* Added #if IN_DMD versioning around DMD backend specific code in the D1 frontend, D2 is currently broken.
* All part of a greater cleanup scheme.

ir/irsymbol.cpp

@@ -1,70 +0,0 @@
-#include "gen/llvm.h"
-#include "ir/ir.h"
-#include "ir/irsymbol.h"
-#include "ir/irvar.h"
-
-#include "gen/logger.h"
-
-std::set<IrDsymbol*> IrDsymbol::list;
-
-void IrDsymbol::resetAll()
-{
-    Logger::println("resetting %u Dsymbols", list.size());
-    std::set<IrDsymbol*>::iterator it;
-    for(it = list.begin(); it != list.end(); ++it)
-        (*it)->reset();
-}
-
-IrDsymbol::IrDsymbol()
-{
-    bool incr = list.insert(this).second;
-    assert(incr);
-    reset();
-}
-
-IrDsymbol::IrDsymbol(const IrDsymbol& s)
-{
-    bool incr = list.insert(this).second;
-    assert(incr);
-    DModule = s.DModule;
-    irModule = s.irModule;
-    irStruct = s.irStruct;
-    irFunc = s.irFunc;
-    resolved = s.resolved;
-    declared = s.declared;
-    initialized = s.initialized;
-    defined = s.defined;
-    irGlobal = s.irGlobal;
-    irLocal = s.irLocal;
-    irField = s.irField;
-}
-
-IrDsymbol::~IrDsymbol()
-{
-    list.erase(this);
-}
-
-void IrDsymbol::reset()
-{
-    DModule = NULL;
-    irModule = NULL;
-    irStruct = NULL;
-    irFunc = NULL;
-    resolved = declared = initialized = defined = false;
-    irGlobal = NULL;
-    irLocal = NULL;
-    irField = NULL;
-}
-
-bool IrDsymbol::isSet()
-{
-    return (irStruct || irFunc || irGlobal || irLocal || irField);
-}
-
-IrVar* IrDsymbol::getIrVar()
-{
-    assert(irGlobal || irLocal || irField);
-    return irGlobal ? (IrVar*)irGlobal : irLocal ? (IrVar*)irLocal : (IrVar*)irField;
-}
-
-llvm::Value*& IrDsymbol::getIrValue() { return getIrVar()->value; }