fix cmake file type

git-svn-id: http://libtorrent.googlecode.com/svn@10025 f43f7eb3-cfe1-5f9d-1b5f-e45aa6702bda
merged fix from RC_0_16

git-svn-id: http://libtorrent.googlecode.com/svn@10026 f43f7eb3-cfe1-5f9d-1b5f-e45aa6702bda
tag 1.0 RC3

git-svn-id: http://libtorrent.googlecode.com/svn@10027 f43f7eb3-cfe1-5f9d-1b5f-e45aa6702bda