Compile error fix for QNX

This patch is given in

http://code.google.com/p/google-glog/issues/detail?id=114



git-svn-id: https://google-glog.googlecode.com/svn/trunk@111 eb4d4688-79bd-11dd-afb4-1d65580434c0

src/logging.cc

@@ -78,6 +78,17 @@ using std::ostream;
 using std::ostringstream;
 using std::strstream;
 
+using std::FILE;
+using std::fwrite;
+using std::fclose;
+using std::fflush;
+using std::fprintf;
+using std::perror;
+
+#ifdef __QNX__
+using std::fdopen;
+#endif
+
 // There is no thread annotation support.
 #define EXCLUSIVE_LOCKS_REQUIRED(mu)