According to Junichi's manual they should be in -dev packages (that makes sense, since they are only used by libtool builds).
The following packages might be affected. The list only includes packages from unstable in libs/ with digits in the name. hamlib1 kdelibs3 kdelibs3-cups libaspell10 libcapi20 libdcopc1 libelastic8 libesmtp5 libflux0 libfwbuilder2 libgdkxft0 libgoops5 libgretl0 libguile9 libicq1 libkdenetwork1 libkdexparts1 libkonq3 libkore0 libkscan1 libkxmleditor1 liblircclient0 liblzo1 libmagick5 libmagick++5 libmimelib1 libmng1 libprelude0 libpspell-ispell1 librrd0 libsword1 libyahoo0 vflib2
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