Use glog for logging in the OSX USB layer

Change-Id: I8a3a4dfc768fdd335f03dc582c85b410c808aeb7
diff --git a/adb/client/main.cpp b/adb/client/main.cpp
index 206442a..39bb02b 100644
--- a/adb/client/main.cpp
+++ b/adb/client/main.cpp
@@ -134,6 +134,7 @@
     setvbuf(stderr, NULL, _IONBF, 0);
 #endif
     fprintf(stderr, "--- adb starting (pid %d) ---\n", getpid());
+    LOG(INFO) << adb_version();
 }
 
 int adb_main(int is_daemon, int server_port, int ack_reply_fd) {