MacOS requires unistd.h for off_t.
MacOS requires unistd.h for off_t.

Using oggz_off_t is probably a better idea, but the rest of the file is 
trying hard to be generic. Also declare header_content_type_ogg() with
and explicit void for consistency.


git-svn-id: ed696e516b63563c8842837a624e30c98be77b3c@3667 8158c8cd-e7e1-0310-9fa4-c5954c97daef

kfish/liboggz,kfish/liboggz,brion/liboggz,brion/liboggz,brion/liboggz,kfish/liboggz,brion/liboggz