Restart CI for New Technology and UBSAN hunting

Continuous Integration (via runit and runitd) is now re-enabled on win7
and win10. The `make test` command, which runs the tests on all systems
is now the fastest and most stable it's been since the project started.

UBSAN is now enabled in MODE=dbg in addition to ASAN. Many instances of
undefined behavior have been removed. Mostly things like passing a NULL
argument to memcpy(), which works fine with Cosmopolitan Libc, but that
doesn't prevents the compiler from being unhappy. There was an issue w/
GNU make where static analysis claims a sprintf() call can overflow. We
also now have nicer looking crash reports on Windows since uname should
now be supported and msys64 addr2line works reliably.

third_party/infozip/zip/zip.c

@@ -2195,7 +2195,7 @@ char **argv;            /* command line tokens */
 
   char **args = NULL;  /* could be wide argv */
 
-  if (!IsTiny()) showcrashreports();
+  if (!IsTiny()) ShowCrashReports();
 
 #ifdef THEOS
   /* the argument expansion from the standard library is full of bugs */