stackbuilder - wizard: Count download stats using the existing

Log Message:
-----------
Count download stats using the existing postgresql.org infrastructure.

Modified Files:
--------------
wizard:
App.cpp (r1.27 -> r1.28)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/stackbuilder/wizard/App.cpp.diff?r1=1.27&r2=1.28)
StackBuilder.cpp (r1.6 -> r1.7)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/stackbuilder/wizard/StackBuilder.cpp.diff?r1=1.6&r2=1.7)
wizard/include:
Config.h (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/stackbuilder/wizard/include/Config.h.diff?r1=1.4&r2=1.5)
StackBuilder.h (r1.6 -> r1.7)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/stackbuilder/wizard/include/StackBuilder.h.diff?r1=1.6&r2=1.7)