Arch Linux

First reported on arch-general: https://mailman.archlinux.org/pipermail/arch-general/2014-July/036910.html

Today I was looking at the installation of ownCloud on my home Arch
server, and I noticed one of the optional dependencies returned by
pacman (php-imagick) couldn't be found in the official repos. Turns out
it's in the AUR [1]. Arch packages' owncloud webpage mentions
"(virtual)" next to php-imagick and has no hyperlink to it [2]. Is that expected?

Also, after looking at the latest ownCloud official admin manual
prerequisites section [3] it seems package dependencies should be
overhauled:

* php-intl should be moved to optdepends array;
* smbclient should be removed from optdepends (required only for
specific apps, otherwise php-ldap from [extra] should be added too);
* php-apcu and php-xcache should be added to optdepends;
* quite probably php-fpm should be included too since it is mentioned in
the given nginx example config [4];
* and of course, php-imagick should be removed from optdepends if it
isn't expected that AUR packages are mentioned in official repos PKGBUILDs.

Updated PKGBUILD attached.

[1] https://aur.archlinux.org/packages/php-imagick
[2] https://www.archlinux.org/packages/community/any/owncloud/
[3] http://doc.owncloud.org/server/7.0/admin_manual/installation/installation_source.html#prerequisites
[4] http://doc.owncloud.org/server/7.0/admin_manual/installation/installation_source.html#nginx-configuration

Additional info:
* owncloud 7.0.0-1


Steps to reproduce:
# pacman -S owncloud php-imagick
error: target not found: php-imagick