atk/atkmm.pc.in: Fix include paths (atkmm-2-28 branch)
Hi,
When working on converting gtkmm-3-24 to use __declspec(dllexport)
, I found that we aren't actually including the directory where atkmmconfig.h is installed, when building via the pkg-config files with the autotools builds.
This updates the atkmm.pc.in template so that we look for the installed atkmmconfig.h in atkmm-1.6.pc.
With blessings, thank you!