Revert "gdb/stl-views: remove now that newer versions of gdb support printing stl containers"

This reverts commit cc02f2413b025171d24a85e66afb3bfe0b2e9a50.
Revert "gdinit: remove now that newer versions of gdb support printing stl containers"

This reverts commit d7d007d1df63efac34e7bbeeb3531b76afedda95.