MacOS fixes

- Include grgsm/endian.h in tch_h_decoder_impl.cc
- Revert 0ed39fbf9340bdfb254bec5e3b94d9f00cf9d151 as linking with
  boost_thread is needed

Fixes GH-444

Change-Id: I00884962295082cff3eb64fa21e9f73437be0001
diff --git a/lib/decoding/tch_h_decoder_impl.cc b/lib/decoding/tch_h_decoder_impl.cc
index d2f29c7..11da907 100644
--- a/lib/decoding/tch_h_decoder_impl.cc
+++ b/lib/decoding/tch_h_decoder_impl.cc
@@ -25,6 +25,7 @@
 #endif
 
 #include <grgsm/gsmtap.h>
+#include <grgsm/endian.h>
 #include "tch_h_decoder_impl.h"
 
 extern "C" {