Handle bst_ex_warn messages better
Handle bst_ex_warn messages better

aclements/latexrun,temporaer/latexrun,msullivan/latexrun,FranzSkuffka/latexrun,mhoogendoorn/latexrun,aclements/latexrun,temporaer/latexrun,apuignav/latexrun,msullivan/latexrun,FranzSkuffka/latexrun,mhoogendoorn/latexrun,apuignav/latexrun