fix build with glibc 2.16

Change-Id: Iaa983064dc8643bceb18cba3a2b720b3a5830b78

boost/UnpackedTarball_boost.mk

@@ -28,6 +28,8 @@ boost_patches += boost.mipsbackport.patch
 boost_patches += boost.7551.unusedvars.patch
 boost_patches += boost.4100.warnings.patch
 boost_patches += boost.4510.warnings.patch
+#https://svn.boost.org/trac/boost/ticket/6940
+boost_patches += boost.6940.glibc.patch
 
 boost_patches += boost.windows.patch
 boost_patches += boost.vc2012.patch

boost/boost.6940.glibc.patch

+--- misc/boost_1_44_0/boost/thread/xtime.hpp	2012-11-05 20:13:28.034300778 -0500
++++ misc/build/boost_1_44_0/boost/thread/xtime.hpp	2012-11-05 20:13:50.856322691 -0500
+@@ -20,7 +20,7 @@
+
+ enum xtime_clock_types
+ {
+-    TIME_UTC=1
++    TIME_UTC_=1
+ //    TIME_TAI,
+ //    TIME_MONOTONIC,
+ //    TIME_PROCESS,
+@@ -68,7 +68,7 @@
+
+ inline int xtime_get(struct xtime* xtp, int clock_type)
+ {
+-    if (clock_type == TIME_UTC)
++    if (clock_type == TIME_UTC_)
+     {
+         *xtp=get_xtime(get_system_time());
+         return clock_type;