Force initialize the runtime module in Module::genLLVMModule. It is required

for all non-trivial D modules anyway, so why load it lazily? This fixes
run/typeid_83.d (DtoDeclareTypeInfo expects runtime to be initialized)

gen/runtime.cpp

@@ -36,7 +36,9 @@ bool LLVM_D_InitRuntime()
     Logger::println("*** Initializing D runtime declarations ***");
     LOG_SCOPE;
 
-    LLVM_D_BuildRuntimeModule();
+    if (!M)
+        LLVM_D_BuildRuntimeModule();
+
     return true;
 }
 

gen/toir.cpp

@@ -2585,8 +2585,8 @@ void obj_includelib(const char* lib)
 
 void backend_init()
 {
-    // now lazily loaded
-    //LLVM_D_InitRuntime();
+    // LLVM_D_InitRuntime is done in Module::genLLVMModule
+    // since it requires the semantic pass to be done
 }
 
 void backend_term()

gen/toobj.cpp

@@ -134,6 +134,8 @@ llvm::Module* Module::genLLVMModule(Ir* sir)
         error("is missing 'class ClassInfo'");
         fatal();
     }
+    
+    LLVM_D_InitRuntime();
 
     // process module members
     for (int k=0; k < members->dim; k++) {