[pdftex] Bug LiteralDirectFirstSpace

[The Thanh Han]

> > when I pdftexed the example and examined the result in acroread4.05/linuxi386,
> > nothing seems odd to me, everything look ok. But when viewed by gv, there are
> > some unwanted space before the exclamation marks.
> 
> It looks as bug in AR4/Linux.
> 
> AR5/Linux, gs5.50, gs8.01, xpdf 0.92 show the extra space with
> pdf_first_space_corr <> 0, the output is correct, if pdf_first_space_corr
> is set to 0.
> 
> > If I remmember correctly, "some reason" looks rather like a bug of acrobat
> > reader and pdf_first_space_corr was introduced as a workaround.
> 
> Apparently the current workaround seems to be wrong for all other
> PDF viewers than AR4/Linux. Without the workaround the result is
> not suitable for AR4/Linux.

then this bug is only fixed from AR5. AR4 definitively is not the first
version I used.

ok, we need to fix it...

Thanh