Several window ports that support perm_invent were
using a call back to the core display_inventory()
function.
While calling from the window port back to core functions
is arguably not ideal in the first place, it was recently
brought to light that code NetHack-3.7 code changes to
display_inventory() actually caused it to stop repopulating
the perm_invent window as intended under certain circumstances.
For now, provide an alternative function, repopulate_perminvent(),
that hopefullshould still work the way it did previously.
There will likely be some additional changes after this to
further improve things, at some point.
For now though, this
Resolves#1454
d5658018ac