[WIP] [rtmbuild] Allow idl dir name with version

[pazeshun]

Related to start-jsk/rtmros_hironx#527 (comment)
I'll add detailed information when I make other PRs requiring this PR.

[pazeshun]

$ ipython
Python 2.7.6 (default, Nov 13 2018, 12:45:42) 
Type "copyright", "credits" or "license" for more information.

IPython 1.2.1 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: import re

In [2]: re.sub("test1/idl/(.+).h", r"test2/idl/\1.h", "test_test1/idl/hoge.h")
Out[2]: 'test_test2/idl/hoge.h'

In [3]: re.sub("test1/idl(.*)/(.+).h", r"test2/idl\1/\2.h", "test_test1/idl/hoge.h")
Out[3]: 'test_test2/idl/hoge.h'

In [4]: re.sub("test1/idl(.*)/(.+).h", r"test2/idl\1/\2.h", "test_test1/idl_315_1_9/hoge.h")
Out[4]: 'test_test2/idl_315_1_9/hoge.h'

In [5]: re.sub("test1/idl(.*)/(.+).h", r"test2/idl\1/\2.h", "test_test1/idl_315_1_10/hoge.h")
Out[5]: 'test_test2/idl_315_1_10/hoge.h'

In [6]: re.sub("test1/idl/(.+).h", r"test2/idl/\1.h", "test_test1/idl_315_1_9/hoge.h")
Out[6]: 'test_test1/idl_315_1_9/hoge.h'

[pazeshun]

Temporarily included in start-jsk/rtmros_hironx#533