stackbuilder - wizard: Add support for alternate URLs to point direct to

Log Message:
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Add support for alternate URLs to point direct to a third party application website.

Modified Files:
--------------
wizard:
App.cpp (r1.12 -> r1.13)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/stackbuilder/wizard/App.cpp.diff?r1=1.12&r2=1.13)
AppList.cpp (r1.10 -> r1.11)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/stackbuilder/wizard/AppList.cpp.diff?r1=1.10&r2=1.11)
wizard/include:
App.h (r1.8 -> r1.9)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/stackbuilder/wizard/include/App.h.diff?r1=1.8&r2=1.9)