made win32 platforms use file_win.cpp and other platforms use file.cpp. factored out .cpp ending of source files in Jamfile
made win32 platforms use file_win.cpp and other platforms use file.cpp. factored out .cpp ending of source files in Jamfile

deluge-clone/libtorrent,deluge-clone/libtorrent,deluge-clone/libtorrent,deluge-clone/libtorrent,deluge-clone/libtorrent,deluge-clone/libtorrent