Fix for bash loadable builtins 'sleep' execution failure issue

The rootcause of the failure was found with select() execution 
with time information in fsleep() function in lib/sh/ufunc.c file.

The fix patch content resolves the issue.

Test logs (After applying patch)
=========
 
# date; sleep 1 & date; sleep 10; date

Mon Nov 27 17:25:31 IST 2017
[1] 13173
Mon Nov 27 17:25:31 IST 2017
Mon Nov 27 17:25:41 IST 2017    -----> Took 10 Sec's sleep 
[1]+  Done                    sleep 1

#

Signed-off-by: Thiruvadi Rajaraman <trajaraman@mvista.com> 

Index: bash-4.4-rc1/lib/sh/ufuncs.c
===================================================================
--- bash-4.4-rc1.orig/lib/sh/ufuncs.c	2017-11-27 13:57:18.172796871 +0530
+++ bash-4.4-rc1/lib/sh/ufuncs.c	2017-11-27 17:21:13.622624417 +0530
@@ -90,11 +90,16 @@
      unsigned int sec, usec;
 {
   struct timeval tv;
+  int ret = 0;
 
   tv.tv_sec = sec;
   tv.tv_usec = usec;
 
-  return select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &tv);
+  do {
+	ret = select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &tv);
+  } while ( (ret == -1));
+  
+  return ret;
 }
 #else /* !HAVE_TIMEVAL || !HAVE_SELECT */
 int