Correctly distribute shine files.

Close #2954. Patch by cherife on trac.
(cherry picked from commit bead3397)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/codec/shine/Modules.am

-SOURCES_shine = shine_mod.c
+SOURCES_shine = shine_mod.c enc_base.h shine.c