Make improvements

- Fix build flakes
- Polyfill SIGWINCH on Windows
- Fix an execve issue on Windows
- Make strerror show more information
- Improve cmd.exe setup/teardown on Windows
- Support bracketed paste mode in Blinkenlights
- Show keyboard shortcuts in Blinkenlights status bar
- Fixed copy_file_range() and copyfile() w/ zip filesystem
- Size optimize GetDosArgv() to keep life.com 12kb in size
- Improve Blinkenlights ability to load weird ELF executables
- Fix program_executable_name and add GetInterpreterExecutableName
- Make Python in tiny mode fail better if docstrings are requested
- Update Python test exclusions in tiny* modes such as tinylinux
- Add bulletproof unbreakable kprintf() troubleshooting function
- Remove "oldskool" keyword from ape.S for virus scanners
- Fix issue that caused backtraces to not print sometimes
- Improve Blinkenlights serial uart character i/o
- Make clock_gettime() not clobber errno on xnu
- Improve sha256 cpuid check for old computers
- Integrate some bestline linenoise fixes
- Show runit process names better in htop
- Remove SIGPIPE from ShowCrashReports()
- Make realpath() not clobber errno
- Avoid attaching GDB on non-Linux
- Improve img.com example

libc/intrin/asancodes.h

@@ -0,0 +1,28 @@
+#ifndef COSMOPOLITAN_LIBC_INTRIN_ASANCODES_H_
+#define COSMOPOLITAN_LIBC_INTRIN_ASANCODES_H_
+
+#define kAsanScale          3
+#define kAsanMagic          0x7fff8000
+#define kAsanNullPage       -1  /* ∅ 0xff */
+#define kAsanProtected      -2  /* P 0xfe */
+#define kAsanHeapFree       -3  /* F 0xfd */
+#define kAsanHeapRelocated  -4  /* R 0xfc */
+#define kAsanAllocaOverrun  -5  /* 𝑂 0xfb */
+#define kAsanHeapUnderrun   -6  /* U 0xfa */
+#define kAsanHeapOverrun    -7  /* O 0xf9 */
+#define kAsanStackUnscoped  -8  /* s 0xf8 */
+#define kAsanStackOverflow  -9  /* ! 0xf7 */
+#define kAsanGlobalOrder    -10 /* I 0xf6 */
+#define kAsanStackFree      -11 /* r 0xf5 */
+#define kAsanStackPartial   -12 /* p 0xf4 */
+#define kAsanStackOverrun   -13 /* o 0xf3 */
+#define kAsanStackMiddle    -14 /* m 0xf2 */
+#define kAsanStackUnderrun  -15 /* u 0xf1 */
+#define kAsanAllocaUnderrun -16 /* 𝑈 0xf0 */
+#define kAsanUnmapped       -17 /* M 0xef */
+#define kAsanGlobalRedzone  -18 /* G 0xee */
+#define kAsanGlobalGone     -19 /* 𝐺 0xed */
+#define kAsanGlobalUnderrun -20 /* μ 0xec */
+#define kAsanGlobalOverrun  -21 /* Ω 0xeb */
+
+#endif /* COSMOPOLITAN_LIBC_INTRIN_ASANCODES_H_ */