Compile tools and Hammer crash after the 22 Oct x86-64 update

Cookiestrike reported that vbsp, vvis, vrad and studiomdl crash with access violations after the 22 Oct update; gedlunstts-lgtm posted a Crowbar workaround. In #next-update, lavrentievich, VARdanplay_YT and ejjk123 reported Hammer crashing and Hammer++ failing to compile. Closed 23 Oct.