Fix for compiling on windows - the check should be _WIN32 not __WIN32__.  Also, you have to ifdef the rest of the filename_cmp method because realpath does not exist on windows.
Fix for compiling on windows - the check should be _WIN32 not __WIN32__.  Also, you have to ifdef the rest of the filename_cmp method because realpath does not exist on windows.

ruby-debug/ruby-debug-base19,ruby-debug/ruby-debug-base19