Pump up matrix44_setconcat benches 1000x so they can be timed on Android.

bench/Matrix44Bench.cpp

Index: bench/Matrix44Bench.cpp
diff --git a/bench/Matrix44Bench.cpp b/bench/Matrix44Bench.cpp
index 81452b4a3d450b99bf4ed802f7b62069a1a0e781..a990763b62815c2c6fa0eb30533b69e1f795adbd 100644
--- a/bench/Matrix44Bench.cpp
+++ b/bench/Matrix44Bench.cpp
@@ -271,7 +271,7 @@ public:
 protected:
     virtual void performTest() {
         fM0.reset();    // just to normalize this test with prescale/postscale
-        for (int i = 0; i < 10; ++i) {
+        for (int i = 0; i < 10000; ++i) {
             fM0.setConcat(fM1, fM2);
         }
     }