pgbouncer - pgbouncer: Move OS compat functions to src/system.c to keep

Log Message:
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Move OS compat functions to src/system.c to keep the ifdef mess separately.

Also remove crypt() wrapper, pointless.

Modified Files:
--------------
    pgbouncer:
        Makefile (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/Makefile.diff?r1=1.4&r2=1.5)
    pgbouncer/src:
        client.c (r1.5 -> r1.6)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/client.c.diff?r1=1.5&r2=1.6)
        proto.c (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/proto.c.diff?r1=1.2&r2=1.3)
        system.h (r1.2 -> r1.3)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/system.h.diff?r1=1.2&r2=1.3)
        util.c (r1.7 -> r1.8)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/util.c.diff?r1=1.7&r2=1.8)
        util.h (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/util.h.diff?r1=1.4&r2=1.5)

Added Files:
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    pgbouncer/src:
        system.c (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/system.c?rev=1.1&content-type=text/x-cvsweb-markup)