build failure with ICU 4.8

[Ivan Timofeev]

Hi,

I build --with-system-icu, ICU version is 4.8.1.1, and I have got this:

  createRuleBasedBreakIterator: ICU Error "U_ILLEGAL_ARGUMENT_ERROR"  at
line 64, column 7

on i18npool/source/breakiterator/data/line.txt, where line 64 is:

  $CJ = [:LineBreak = Conditional_Japanese_Starter:];

ICU 4.8 does not know Conditional_Japanese_Starter (only ICU 49 does), I
think we should put that conditional stuff from
http://cgit.freedesktop.org/libreoffice/core/commit/?id=92a9b7780c6e13a4da3b12794342edbc4c09ef51
back.

Regards,
Ivan