fakeroot: fix spurious message "undefined symbol"

fakeroot: fix spurious message "undefined symbol"

Since the glibc 2.24-3, and this commit:
https://sourceware.org/git/?p=glibc.git;a=commit;h=80f87443eed17838fe453f1f5406ccf5d3698c25
fakeroot will print spurious message about symbols not being found.

[...]
dlsym(acl_get_fd): /usr/lib/libfakeroot/libfakeroot.so: undefined symbol: acl_get_fd
dlsym(acl_get_file): /usr/lib/libfakeroot/libfakeroot.so: undefined symbol: acl_get_file
dlsym(acl_set_fd): /usr/lib/libfakeroot/libfakeroot.so: undefined symbol: acl_set_fd
dlsym(acl_set_file): /usr/lib/libfakeroot/libfakeroot.so: undefined symbol: acl_set_file
dlsym(acl_get_fd): /usr/lib/libfakeroot/libfakeroot.so: undefined symbol: acl_get_fd
dlsym(acl_get_file): /usr/lib/libfakeroot/libfakeroot.so: undefined symbol: acl_get_file
[...]

It doesn't seem to impair the behavior of fakeroot, it's simply annoying
for the user.

Debian (which is the creator of fakeroot) has a patch which is a
workaround: simply don't display the message.

Note if you wish to bump fakeroot:
A new version is available but the release tarball doesn't include the
'configure' and 'Makefile' pre-generated.
This means that if we were to bump, the package would need to run its
own 'bootstrap' script which will add dependencies to
host-{automake,autoconf,...} which would be annoying (since almost every
build runs fakeroot).

Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>