Fix MinGW64 build.

BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com/9584047

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10911 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

SConstruct

@@ -300,7 +300,12 @@ V8_EXTRA_FLAGS = {
                        '-Wnon-virtual-dtor']
     },
     'os:win32': {
-      'WARNINGFLAGS': ['-pedantic', '-Wno-long-long', '-Wno-pedantic-ms-format']
+      'WARNINGFLAGS': ['-pedantic',
+                       '-Wno-long-long',
+                       '-Wno-pedantic-ms-format'],
+      'library:shared': {
+        'LIBS': ['winmm', 'ws2_32']
+      }
     },
     'os:linux': {
       'WARNINGFLAGS': ['-pedantic'],

src/globals.h

@@ -175,27 +175,27 @@ typedef byte* Address;
 // than defining __STDC_CONSTANT_MACROS before including <stdint.h>, and it
 // works on compilers that don't have it (like MSVC).
 #if V8_HOST_ARCH_64_BIT
-#ifdef _MSC_VER
+#if defined(_MSC_VER)
 #define V8_UINT64_C(x)  (x ## UI64)
 #define V8_INT64_C(x)   (x ## I64)
 #define V8_INTPTR_C(x)  (x ## I64)
 #define V8_PTR_PREFIX "ll"
-#else  // _MSC_VER
+#elif defined(__MINGW64__)
+#define V8_UINT64_C(x)  (x ## ULL)
+#define V8_INT64_C(x)   (x ## LL)
+#define V8_INTPTR_C(x)  (x ## LL)
+#define V8_PTR_PREFIX "I64"
+#else
 #define V8_UINT64_C(x)  (x ## UL)
 #define V8_INT64_C(x)   (x ## L)
 #define V8_INTPTR_C(x)  (x ## L)
 #define V8_PTR_PREFIX "l"
-#endif  // _MSC_VER
+#endif
 #else  // V8_HOST_ARCH_64_BIT
 #define V8_INTPTR_C(x)  (x)
 #define V8_PTR_PREFIX ""
 #endif  // V8_HOST_ARCH_64_BIT
 
-#ifdef __MINGW64__
-#undef V8_PTR_PREFIX
-#define V8_PTR_PREFIX "I64"
-#endif  // __MINGW64__
-
 // The following macro works on both 32 and 64-bit platforms.
 // Usage: instead of writing 0x1234567890123456
 //      write V8_2PART_UINT64_C(0x12345678,90123456);

src/platform-win32.cc

@@ -885,7 +885,6 @@ void* OS::Allocate(const size_t requested,
                    bool is_executable) {
   // VirtualAlloc rounds allocated size to page size automatically.
   size_t msize = RoundUp(requested, static_cast<int>(GetPageSize()));
-  void* address = 0;
 
   // Windows XP SP2 allows Data Excution Prevention (DEP).
   int prot = is_executable ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE;