Fix compile error due to the C++11 user-defined string literals feature

[kartikmohta]

Got errors of the form:

stage.hh: In member function ‘virtual void Stg::Ancestor::SetToken(const string&)’:                                                                                                                                                                                                       
stage.hh:625:62: error: unable to find string literal operator ‘operator""m’ with ‘const char [24]’, ‘long unsigned int’ arguments

With the new C++11 user-defined string literals feature, there has to be a space between string concatenations like the ones used here. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51282.

[AlexDaniel]

May 17 ???

Yes, both this and https://github.com/rtv/Stage/issues/63 are required to make the goddamn thing compile.

[Evidlo]

Has this fix been integrated into Kinetic? I'm trying to build ROS from source on Fedora 25 with these instructions and getting this same error. (in addition to #63).

[CBJamo]

It has not been merged into kinetic, and does need to be, at least for Fedora.