Merge pull request #189 from kyak/master

Update Russian translation
variable name adjustment for consistency
fixed ConflictCheck() with depending packages

Allow installation of packages depending on already provided packages when
not explicitly conflicting with the installed packages. This should allow
packages present both in the repo and the AUR to be installed (Perl modules).
removed forgotten buggy requirement check
rewritten ConflictChecks() for AUR packages
tagged 4.1.16
Create it.po
Merge pull request #194 from NoMore201/master

added Italian translation
added Italian translator credits
fixed asdep status when installing cached packages
tagged 4.1.17
added Polish translation (by Ludvick)
added Polish translator credits
updated Polish translation
fixed build failure after vcs package build
tagged 4.1.18
fixed vcs packages build as root
tagged 4.1.19
fixed empty variable processed in conflicts check
tagged 4.1.20