Breakpoints and navigation works incorrectly if project have filenames with same name

[MikhailMalyutin]

Steps to reproduce:

1. create several ceylon modules with the same file name, for example run.ceylon
   module1:
   run.ceylon
   (...shared void run() {print("hello world")});
   module2:
   run.ceylon

2. set breakpoint to specific line in module2:run.ceylon
   ((shared void run() {throw Exception("ERROR);});)

3. run module1.
   See breakpoint in module2:run.ceylon stopped the execution

4. If run module2.run - there is stacktrace in log. If press to line where exception is thrown - IDEA plugin can't determine in which file it was thrown, you must select from popup from 2 variants.