Common Test problems with includes since 17.4

Since Erlang 17.4 Common Test seems to have problems with included .hrl files 
outside of the folder the unit test resides in (even when passing the 
appropriate "include" option). The make process succeeds but when the test is 
actually run, a badarg is thrown:

EXIT, reason {{badarg,{tree,macro,{attr,0,[],none},{macro,
{var,0,'RT'},none}}},
[{erl_syntax,concrete,1,[{file,"erl_syntax.erl"},{line,6188}]},
 {erl_syntax,concrete_list,1, [{file,"erl_syntax.erl"},{line,6192}]},
 {erl_syntax,concrete_list,1, [{file,"erl_syntax.erl"},{line,6192}]},
 {erl_syntax,concrete,1,[{file,"erl_syntax.erl"},{line,6162}]},
 {erl_syntax,concrete,1,[{file,"erl_syntax.erl"},{line,6159}]},
 {erl_syntax,concrete_list,1, [{file,"erl_syntax.erl"},{line,6192}]},
 {erl_syntax,concrete_list,1, [{file,"erl_syntax.erl"},{line,6192}]},
 {erl_syntax,concrete,1,[{file,"erl_syntax.erl"},{line,6162}]}]}

== Steps to reproduce ===

* copy the attached test_SUITE.erl into a test folder and put test_SUITE.hrl 
into a sub-folder named "include"
* run any of these two commands:
ct_run -include "include" -suite test_SUITE
CT_INCLUDE_PATH=include ct_run -suite test_SUITE

=> if the .hrl file is put into the test folder, everything is fine though



Nico

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-module(test_SUITE).
-author('[email protected]').

-compile(export_all).

-include("test_SUITE.hrl").

all() -> [test_macro].

-spec test_macro([{atom(), ?RT:key()}]) -> ok.
test_macro(_Config) ->
    ok.

-define(RT, rt_chord).

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