Just grabbed 1.10.7 off of github (https://github.com/lwindolf/liferea/archive/v1.10.7.tar.gz)
As always, the configure.ac references a po/Makefile.in.in file. However, I noticed that now this file doesn't exist.
So I had to grab a po/Makefile.in.in file from a previous version (1.10.4, I think) and that seemed to do the trick.
Am I missing something obvious here or is this just a packaging bug?