THRIFT-307. erlang: Make HiPE optional

You can still use it by running "make ERLC_FLAGS='+native'".


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@760166 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/erl/src/Makefile b/lib/erl/src/Makefile
index d2d4ff1..980af81 100644
--- a/lib/erl/src/Makefile
+++ b/lib/erl/src/Makefile
@@ -53,7 +53,7 @@
 
 ERL_FLAGS +=
 ERL_INCLUDE = -I../include -I../../fslib/include -I../../system_status/include
-ERL_COMPILE_FLAGS += $(ERL_INCLUDE) +native
+ERL_COMPILE_FLAGS += $(ERL_INCLUDE)
 
 # ----------------------------------------------------
 # Targets