[4088fd] Added a generated date comment to avoid the "no commit because unchanged" #4125 issue

src/lib/eval/location.hh

+// Generated 2015114
 // A Bison parser, made by GNU Bison 3.0.4.
 
 // Locations for Bison parsers in C++

src/lib/eval/position.hh

+// Generated 2015114
 // A Bison parser, made by GNU Bison 3.0.4.
 
 // Positions for Bison parsers in C++

src/lib/eval/stack.hh

+// Generated 2015114
 // A Bison parser, made by GNU Bison 3.0.4.
 
 // Stack handling for Bison parsers in C++