Go Scheduler issue with sync.Mutex using gccgo

Signed-off-by: Srini Brahmaroutu <srbrahma@us.ibm.com>

ioutils/scheduler_gccgo.go

@@ -0,0 +1,13 @@
+// +build gccgo
+
+package ioutils
+
+import (
+	"runtime"
+)
+
+func callSchedulerIfNecessary() {
+	//allow or force Go scheduler to switch context, without explicitly
+	//forcing this will make it hang when using gccgo implementation
+	runtime.Gosched()
+}