umurmur: Update to 0.2.16. Also fix build breakage since PolarSSL/MbedTLS's version module was disabled.

Signed-off-by: Martin Johansson <martin@fatbob.nu>

net/umurmur/patches/10-Add-compile-time-check-for-POLARSSL_VERSION_FEATURES.patch

@@ -0,0 +1,17 @@
+diff --git a/src/ssli_polarssl.c b/src/ssli_polarssl.c
+index a36ccb6..167637b 100644
+--- a/src/ssli_polarssl.c
++++ b/src/ssli_polarssl.c
+@@ -225,8 +225,12 @@ void SSLi_init(void)
+ 	    Log_fatal("Cannot open /dev/urandom");
+ #endif
+ 
++#ifdef POLARSSL_VERSION_FEATURES
+     version_get_string(verstring);
+     Log_info("PolarSSL library version %s initialized", verstring);
++#else
++    Log_info("PolarSSL library initialized");
++#endif
+ }
+ 
+ void SSLi_deinit(void)