pgbouncer - pgbouncer: asynctest improvements - add $(LIBS) to link

Log Message:
-----------
asynctest improvements

- add $(LIBS) to link line
- allow custom query
- define fatal_noexit() for CASSERT builds

Modified Files:
--------------
pgbouncer/test:
Makefile (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/test/Makefile.diff?r1=1.5&r2=1.6)
asynctest.c (r1.13 -> r1.14)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/test/asynctest.c.diff?r1=1.13&r2=1.14)