i-bem.bemhtml: Do not repeat block class on mix with same block's mod#605

tadatuta wants to merge 2 commits into

support/2.xbem/bem-bl:support/2.xfrom

bemhtmlMixOfSameBlockFix@support/2.xbem/bem-bl:bemhtmlMixOfSameBlockFix@support/2.xCopy head branch name to clipboard