This should avoid potential crash during shutdown while some Eio thread
were still running. We are still not blocking for more than 30s, so if
an IO is blocked on a dead device, you should be fine.
- fchmod() was isolated by HAVE_CHMOD, which was always present
before... then fchmod() is also present as no errors were reported
since its introduction.
- fchmod() is POSIX for a while now.
- lstat() is POSIX for a while now.
- setxattr is supported by EFL_CHECK_FUNCS() as is used by eina.
- splice() check added to EFL_CHECK_FUNCS()
SVN revision: 81938