Suggested changes for pipelight & wine-silverlight AUR

WARNING: A lot of the changes have not been tested yet. If you agree that the changes are useful it would be nice to do some testing yourself (= at least confirm once that it still compiles well). More details about the changes are listed below.

Main reason for this patchset: All the different pipelight packages (AUR:pipelight, AUR:pipelight-git, repo:pipelight) and wine packages (AUR:wine-silverlight, AUR:wine-compholio-bin, repo:wine-compholio) make it very difficult for users to mix the versions. Nearly every version uses a different path and has different dependencies. My goal is to "unify" the packages a bit, such that users can use for example use our wine-compholio version combined with pipelight from AUR, or even with pipelight-git if they want to try out new features.

This patchset includes the following changes:

#1) wine-silverlight installs some additional symlinks to /opt/wine-compholio/bin/*. This is sufficient for Pipelight, and makes it possible to compile Pipelight with the upstream /opt/wine-compholio/ wine path. Moreover the wine version now provides "wine-compholio".

#2) Change pipelight dependency to "wine-compholio".

#3) Fix a bug in the wine-silverlight PKGBUILD. The ncurses fix has no effect if the ./configure script is overwritten later by autoreconf.

#4) Your pipelight package was still missing some dependencies. Since we got a bug report recently for this issue, and I've already fixed it in our repo, it would be nice if you could fix this, too.

#5) Some code in the PKGBUILD script of Pipelight looks outdated. I've cleaned this up a bit. For a detailed list of all the changes take a look at the commit message.

If there is anything else I have to fix before merging, please report back and I'll take a look at it.

Regards,
Sebastian