Log Message:-----------Support PGXS build if USE_PGXS is defined.
Modified Files:-------------- clearxlogtail: Makefile (r1.1 -> r1.2) (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/clearxlogtail/clearxlogtail/Makefile.diff?r1=1.1&r2=1.2)