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.

libc/log/attachdebugger.c

@@ -42,7 +42,7 @@
  * possible UX for debugging your app, for varying levels of available
  * information, on most of the various platforms.
  *
- * Before calling this function, consider placing showcrashreports() in
+ * Before calling this function, consider placing ShowCrashReports() in
  * your main function and calling DebugBreak() wherever you want; it's
  * safer. Also note the "GDB" environment variable can be set to empty
  * string, as a fail-safe for disabling this behavior.

libc/log/backtrace2.c

@@ -79,7 +79,7 @@ static int PrintBacktraceUsingAddr2line(int fd, const struct StackFrame *bp) {
    * DWARF is a weak standard. Platforms that use LLVM or old GNU
    * usually can't be counted upon to print backtraces correctly.
    */
-  if (!IsLinux() /* && !IsWindows() */) {
+  if (!IsLinux() && !IsWindows()) {
     ShowHint("won't print addr2line backtrace because probably llvm");
     return -1;
   }

libc/log/oncrash.c

@@ -231,7 +231,7 @@ relegated void ShowCrashReport(int err, int sig, struct siginfo *si,
               ? "Stack Overflow"
               : GetSiCodeName(sig, si->si_code),
           host, __getpid(), program_invocation_name, names.sysname,
-          names.nodename, names.release, names.version);
+          names.version, names.nodename, names.release);
   if (ctx) {
     kprintf("%n");
     ShowFunctionCalls(ctx);

libc/log/onkill.c

@@ -51,7 +51,7 @@ textexit static void __onkill(int sig, struct siginfo *si,
 
 /**
  * Installs default handlers for friendly kill signals.
- * @see showcrashreports()
+ * @see ShowCrashReports()
  */
 void callexitontermination(sigset_t *opt_out_exitsigs) {
   struct sigaction sa;