Added CAMLparam/CAMLreturn back. perror() on function errors.
Added doc generation for Xentoollog and Xenlight.
grant_table_index is now an int.
Added a test folder.
Fixed a bug in gnttab due to the conversion of gntref from int32 to int.
test_gntshr now tests gnttab as well.
Ignore *.{native,byte}.
test_gntshr now tests mapv_exn as well.
Added a test for Eventchn.
Modernized gntshr_stubs.c
Updated test_gntshr.ml, exhibiting a bug in libxc.
Fix compilation.
Merge pull request #28 from vbmithr/master

Doc generation for new modules + improving evtchn_stubs.c