pgbouncer - pgbouncer: connstr enhanchements * allow to specify hosts

Log Message:
-----------
connstr enhanchements

* allow to specify hosts by name - gethostbyname()
* allow to specify custom unix socket location for db
* allow quoted values

Modified Files:
--------------
pgbouncer/src:
bouncer.h (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/bouncer.h.diff?r1=1.7&r2=1.8)
loader.c (r1.1.1.1 -> r1.2)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/loader.c.diff?r1=1.1.1.1&r2=1.2)
objects.c (r1.11 -> r1.12)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/objects.c.diff?r1=1.11&r2=1.12)
sbuf.c (r1.9 -> r1.10)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/sbuf.c.diff?r1=1.9&r2=1.10)
sbuf.h (r1.6 -> r1.7)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/sbuf.h.diff?r1=1.6&r2=1.7)
system.h (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/system.h.diff?r1=1.3&r2=1.4)