* Circular gal<->common dependency bites again. Add 'common'
again to the 'kicad' target's link libraries. libgal.a depends
on SHAPE_POLY_SET in common, but common depends on gal. This is
not a real fix, but it unsticks Linux compilations. Fixing the
circular dep is an existing bug: https://bugs.launchpad.net/kicad/+bug/1832229
* Missing LEGACY_HK_NAME for ACT_EndTuning: this was probably accidentally
allowed on some other platform due to different wxString constructors.
On Linux/GCC, it breaks.
* Unused include from /kicad in export_vrml.cpp. This is not findable
on Linux, as pcbnew does not include the right dirs for this to be
found. But it's not used, so just remove it.