more vc7 fixes and unicode fix in file.cpp

src/file.cpp

@@ -43,6 +43,10 @@ POSSIBILITY OF SUCH DAMAGE.
 typedef int mode_t;
 #endif
 
+#ifdef UNICODE
+#include "libtorrent/storage.hpp"
+#endif
+
 #else
 // unix part
 #define _FILE_OFFSET_BITS 64
@@ -71,6 +75,10 @@ BOOST_STATIC_ASSERT(sizeof(lseek(0, 0, 0)) >= 8);
 #define O_RANDOM 0
 #endif
 
+#ifdef UNICODE
+#include "libtorrent/storage.hpp"
+#endif
+
 
 namespace fs = boost::filesystem;