Fix download link probing (#33, #34)

[ladios]

Update number is no longer part of the URL of the current release page.
This patch makes the script downloads the current release page first,
and then tries to find a matching version. If not found, then looks for
it in the archive page.

[tomcjohn]

Thanks for posting this patch, my own hacking was getting me no closer to a solution for this. :)

This patch worked for me.

[tomcjohn]

Just to clarify, this got me past my first problem but then failed on a later step.

Last few lines of oab-java.sh.log are:

: # fix permissions
find x64-jdk -name '.properties' -o -name '.xml' | xargs chmod 644
touch unpack-x64-stamp
rm -rf jce
unzip -q jce_policy-6.zip
unzip: cannot find or open jce_policy-6.zip, jce_policy-6.zip.zip or jce_policy-6.zip.ZIP.
make: *** [unpack-jce-stamp] Error 9
dpkg-buildpackage: error: debian/rules build gave error exit status 2
17054's retcode: 2
success

I've manually downloaded jce_policy-6.zip (as per instructions in rraptorr README) and placed it both in /var/local/oab/pkg and in the working directory but neither seem to do the trick. I have absolutely no debian nouse so I may have to give up at this point. :)

[ladios]

That's #31 which is addressed in my other pull request. You can try my
master branch.