Fio 1.50-rc4

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/init.c b/init.c
index c3f23f9..6666f37 100644
--- a/init.c
+++ b/init.c
@@ -22,7 +22,7 @@
 
 #include "lib/getopt.h"
 
-static char fio_version_string[] = "fio 1.50-rc3";
+static char fio_version_string[] = "fio 1.50-rc4";
 
 #define FIO_RANDSEED		(0xb1899bedUL)