COMPMID-631: Merge branches/gles_compute branch

Last commit:
commit b25c5f68042b0c81bf611d59a1bb8535e1c42497
Author: Xinghang Zhou <xinghang.zhou@arm.com>
Date:   Wed Oct 25 18:48:10 2017 +0800

    Synced validation's tolerances of GCSoftmax from cl side

Change-Id: Ibe72054205c1c8721845d679a31af7ed0a7c5cf6
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/93283
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
diff --git a/arm_compute/core/Error.h b/arm_compute/core/Error.h
index fa3f9c0..277db9d 100644
--- a/arm_compute/core/Error.h
+++ b/arm_compute/core/Error.h
@@ -24,6 +24,7 @@
 #ifndef __ARM_COMPUTE_ERROR_H__
 #define __ARM_COMPUTE_ERROR_H__
 
+#include <stdarg.h>
 #include <stdexcept>
 #include <string>
 
@@ -106,6 +107,16 @@
     std::string _description;
 };
 
+/** Creates an error containing the error message from variable argument list
+ *
+ * @param[in] error_code Error code
+ * @param[in] function   Function in which the error occurred.
+ * @param[in] file       Name of the file where the error occurred.
+ * @param[in] line       Line on which the error occurred.
+ * @param[in] msg        Message to display before aborting.
+ * @param[in] args       Variable argument list of the message.
+ */
+Error create_error_va_list(ErrorCode error_code, const char *function, const char *file, const int line, const char *msg, va_list args);
 /** Creates an error containing the error message
  *
  * @param[in] error_code Error code
@@ -241,7 +252,7 @@
  * @param[in] error Error value to check.
  */
 #define ARM_COMPUTE_ERROR_THROW_ON(error) \
-    error.throw_if_error();
+    error.throw_if_error()
 
 /** If the condition is true, the given message is printed and an exception is thrown
  *