e.g. "CM Roman CE" should be left alone.

bump font cache id to invalidate old cached lists

I think this practice stems from Window 3.1/Word 95 where the encoding was
included in the font name
http://www.webcenter.ru/~kazarn/eng/fonts_ttf.htm#charsettbl Microsoft Office
still generates RTF files with weird-ass Win 3.1 style fontnames but any actual
existing fonts that happen to have names that fall into that pattern should be
left alone now.

Change-Id: Ibb704048d63b33ce510d6b1076700c6e94a0af2a