langpacks: sync with langpacks/english

git-svn-id: http://svn.miranda-ng.org/main/trunk@5817 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
langpacks/polish: update

git-svn-id: http://svn.miranda-ng.org/main/trunk@5818 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
langpacks/belarusian: renamed some plugins

git-svn-id: http://svn.miranda-ng.org/main/trunk@5819 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
AvatarHistory: cosmetics

git-svn-id: http://svn.miranda-ng.org/main/trunk@5820 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
langpacks/russian: cosmetics

git-svn-id: http://svn.miranda-ng.org/main/trunk@5821 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
optimizing includes

git-svn-id: http://svn.miranda-ng.org/main/trunk@5822 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c