Keep only base/extractor.[cc|h].

third_party/minicrt/dllcrt0.cc

-//==========================================
-// LIBCTINY - Matt Pietrek 2001
-// MSDN Magazine, January 2001
-// FILE: DLLCRT0.CPP
-//==========================================
-#include "libctiny.h"
-#include <windows.h>
-#include "initterm.h"
-
-// Force the linker to include KERNEL32.LIB
-#pragma comment(linker, "/defaultlib:kernel32.lib")
-
-// #pragma comment(linker, "/nodefaultlib:libc.lib")
-// #pragma comment(linker, "/nodefaultlib:libcmt.lib")
-
-// User routine DllMain is called on all notifications
-
-extern BOOL WINAPI DllMain(
-        HANDLE  hDllHandle,
-        DWORD   dwReason,
-        LPVOID  lpreserved
-        ) ;
-
-extern "C" void DoInitialization();
-extern "C" void DoCleanup();
-
-//
-// Modified version of the Visual C++ startup code.  Simplified to
-// make it easier to read.  Only supports ANSI programs.
-//
-extern "C"
-BOOL WINAPI _DllMainCRTStartup(
-        HANDLE  hDllHandle,
-        DWORD   dwReason,
-        LPVOID  lpreserved
-        ) {
-    if (dwReason == DLL_PROCESS_ATTACH)
-    {
-        // set up our minimal cheezy atexit table
-        _atexit_init();
-
-        // Call C++ constructors
-        _initterm( __xc_a, __xc_z );
-
-        // DoInitialization();
-    }
-
-    BOOL retcode = DllMain(hDllHandle, dwReason, lpreserved);
-
-    if (dwReason == DLL_PROCESS_DETACH)
-    {
-        _DoExit();
-        // DoCleanup();
-    }
-
-    return retcode ;
-}