Compare full path of breakpoint positions.
Compare full path of breakpoint positions.

Fixes http://rubyforge.org/tracker/index.php?func=detail&aid=27254&group_id=3085&atid=11903
jruby/jruby-debug,ruby-debug/ruby-debug,gfowley/ruby-debug,ruby-debug/ruby-debug,gfowley/ruby-debug,jruby/jruby-debug,ruby-debug/ruby-debug,gfowley/ruby-debug