Make pkgconfig(libsync) conditional by defining droid_has_no_libsync 1
in prjconf if the android-headers have no libsync (in older hw
adaptations)

Signed-off-by: David Greaves <david@dgreaves.com>
Merge pull request #5 from lbt/master

Make pkgconfig(libsync) conditional by defining droid_has_no_libsync 1