pgbouncer - pgbouncer: simple version of jenkins hash the attempt to

Log Message:
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simple version of jenkins hash

the attempt to have clean + optimized did not work out as it was not very clean
nor very optimized - on some arches slower than bob's original.

so instead lets use simplest possible variant.  it happens to be no more than 10%
slower worst case and occasinally even faster (when gcc knows it can do unaligned
access).  seems like good tradeoff.

Modified Files:
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    pgbouncer/src:
        hash.c (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/hash.c.diff?r1=1.1&r2=1.2)
        hash.h (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/src/hash.h.diff?r1=1.1&r2=1.2)