Replace HAVE_MS_C_RUNTIME with _WIN32 in frameworks/base/tools.

Change-Id: Ideef62acbf53a442167c9b8038021affffef9e8a
diff --git a/tools/aidl/search_path.cpp b/tools/aidl/search_path.cpp
index 29dbe26..029e216 100644
--- a/tools/aidl/search_path.cpp
+++ b/tools/aidl/search_path.cpp
@@ -4,7 +4,7 @@
 #include "os.h"
 #include <string.h>
 
-#ifdef HAVE_MS_C_RUNTIME
+#ifdef _WIN32
 #include <io.h>
 #endif
 
@@ -42,7 +42,7 @@
         }
         f.append(expected);
 
-#ifdef HAVE_MS_C_RUNTIME
+#ifdef _WIN32
         /* check that the file exists and is not write-only */
         if (0 == _access(f.c_str(), 0) &&  /* mode 0=exist */
             0 == _access(f.c_str(), 4) ) { /* mode 4=readable */