Fix autotools build libManagerApi.so load failure
Fix autotools build libManagerApi.so load failure

Add missing header and source files to manager/Makemodule.am to solve
libManagerApi.so load failure due to undefined pack_object_handle symbol
in autotools build.

Change-Id: Ie56b628b6fa3aba7305ecedb832c2421f3b1b792
Signed-off-by: Thomas Nyman <637edc83cb495d74e75d0415e2e205da088dba42@aalto.fi>

Open-TEE/tee-engine