fix debug_agent unix_path type
Merge pull request #392 from sonots/fix_debug_agent_unix_path

fix debug_agent unix_path type
add jruby support hackings.
Fcntl does not supoort on Jruby with 64bit Windows.
for keeping order.
add helper for standalone test
add win32 specific support for inode.
disable universal newline for windows.
add nil check for failing first File#open.
File#open with binary mode for windows. this is workaround for universal newline support.
separate temporary directories for windows.