Check cross_compiling variable before AC_CHECK_FILES, since AC_CHECK_FILES cannot be used when cross compiling libtorrent.
Check cross_compiling variable before AC_CHECK_FILES, since AC_CHECK_FILES cannot be used when cross compiling libtorrent.

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