Merge pull request #524 from lowjoel/master

Remove including unistd.h when compiling under Visual C++

Author: sodabrew

ext/mysql2/client.c

@@ -6,7 +6,9 @@
 #include <sys/types.h>
 #include <sys/socket.h>
 #endif
+#ifndef _MSC_VER
 #include <unistd.h>
+#endif
 #include <fcntl.h>
 #include "wait_for_single_fd.h"
 

ext/mysql2/infile.c

@@ -1,7 +1,9 @@
 #include <mysql2_ext.h>
 
 #include <errno.h>
+#ifndef _MSC_VER
 #include <unistd.h>
+#endif
 #include <fcntl.h>
 
 #define ERROR_LEN 1024