Log Message:
-----------
Allow the spinlock test to be compiled successfully in a vpath build.
Modified Files:
--------------
pgsql-server/src/backend/storage/lmgr:
Makefile (r1.19 -> r1.20)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/storage/lmgr/Makefile.diff?r1=1.19&r2=1.20)