fix compiler error when building with gnu-5 toolchain (eg as currently shipped with crystax.org android ndk, and presumably soon with android studio).

dec1 · dec1 · commit 4d84e6efee0d · 2016-11-15T16:35:11.000+01:00
"ts_perf.cpp ....error: 'errno' was not declared in this scope
      int err=errno;"
diff --git a/modules/ts/src/ts_perf.cpp b/modules/ts/src/ts_perf.cpp
@@ -41,6 +41,7 @@ static bool         log_power_checkpoints;
 
 #include <sys/syscall.h>
 #include <pthread.h>
+#include <cerrno>
 static void setCurrentThreadAffinityMask(int mask)
 {
     pid_t pid=gettid();

Original file line number	Diff line number	Diff line change
`@@ -41,6 +41,7 @@ static bool log_power_checkpoints;`
`41`	`41`
`42`	`42`	`#include <sys/syscall.h>`
`43`	`43`	`#include <pthread.h>`
	`44`	`+#include <cerrno>`
`44`	`45`	`static void setCurrentThreadAffinityMask(int mask)`
`45`	`46`	`{`
`46`	`47`	`pid_t pid=gettid();`