Update bzip2 download url

[hakonhagland]

This fixes issue #28 for me.

[genio]

We don't need to remove old versions from the sources.list file

[genio]

The old link could be updated to reflect their current location: https://sourceware.org/pub/bzip2/bzip2-1.0.6.tar.gz

[hakonhagland]

The old link could be updated to reflect their current location

@genio Good idea, I have updated the PR.

[genio]

Apologies. I think I confused you because I didn't explain much.

You can have multiple versions listed in the sources.list file and just use the version you want in the actual build script, 5034. So, if you want to leave both 1.0.6 and 1.0.8 in the sources.list you can do that with no problem. If there's a good reason to move up from 1.0.6 to whatever the latest version is, you just add the new version to the list and change the build script to use the new version.

[hakonhagland]

So, if you want to leave both 1.0.6 and 1.0.8 in the sources.list you can do that with no problem.

@genio So this is because of line 227:

build-extlibs/build.sh

Line 227 in d20a232

(cd $SRCDIR && wget -nv -nc --no-check-certificate `grep -v '^#' $CURDIR/sources.list | grep $PACK | head -n 1`)

the head -n 1 will select the first match, right? Anyway, I am not sure I see a problem with the current sources.list in this PR. It has been updated to the correct URL now, right? Did you mean that I should leave the old http://www.bzip.org/1.0.6/bzip2-1.0.6.tar.gz in there too?

[genio]

I meant you could leave both 1.0.6 and 1.0.8 in there. Where you removed https://github.com/StrawberryPerl/build-extlibs/pull/29/files#diff-b4e8afd31aa7fe64e519b78a18871c7af6444b9ad6986484a5d457d7693b2179L192 1.0.8, you could have the following.

in sources.list:

#### bzip2
#URL http://www.sourceware.org/
https://sourceware.org/pub/bzip2/bzip2-1.0.6.tar.gz
https://sourceware.org/pub/bzip2/bzip2-1.0.8.tar.gz

and then in 5034:

bzip2-1.0.8

OR

bzip2-1.0.6

Depending on what's needed

[hakonhagland]

I meant you could leave both 1.0.6 and 1.0.8 in there.

Ok! good idea. I have updated the PR again.

[shawnlaffan]

@genio - is there anything remaining to do on this PR? I think it can be merged.