multilib conflict with doxygen generated pdf

[Than Ngo]

> 
> This build has the pdf file with a different timestamp in the i686 and
> x86_64 build.
> 
> http://koji.fedoraproject.org/koji/taskinfo?taskID=4189461
> 
> The pdf file is /usr/share/doc/libbluray-devel-0.2.2/libbluray.pdf from
> libbluray-devel-0.2.2-2.fc18
> 

it's a bug in pdftex (part of texlive package) which is used to create pdf 
files. pdftex writes the timestamps "CreationDate (%s)" and "ModDate (%s)" 
into PDF files.

extract from texk/web2c/pdftexdir/utils.c

-------
void printcreationdate()
{
    initstarttime();
    pdf_printf("/CreationDate (%s)\n", start_time_str);
}

void printmoddate()
{
    initstarttime();
    pdf_printf("/ModDate (%s)\n", start_time_str);
}
-------


Than