Make numerous improvements

- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands

libc/sysv/consts.sh

@@ -195,7 +195,7 @@ syscon	open	O_RANDOM				0			0			0			0			0			0x10000000		# kNtFileFlagRandomAcces
 syscon	open	O_SEQUENTIAL				0			0			0			0			0			0x08000000		# kNtFileFlagSequentialScan
 syscon	open	O_DIRECT				0x00004000		0			0x00010000		0			0x00080000		0x00200000		# kNtFileFlagNoBuffering>>8
 syscon	open	O_CLOEXEC				0x00080000		0x01000000		0x00100000		0x00010000		0x00400000		0x00080000		# NT faked as Linux
-syscon	open	O_TMPFILE				0x00410000		0			0			0			0			0x04000100		# Linux 3.11+ (c. 2013) & kNtFileAttributeTemporary|kNtFileFlagDeleteOnClose
+syscon	open	O_TMPFILE				0x00410000		0			0			0			0			0x00000000		# Linux 3.11+ (c. 2013) & kNtFileAttributeTemporary|kNtFileFlagDeleteOnClose
 syscon	open	O_SPARSE				0			0			0			0			0			0x00040000		# we invented it
 syscon	open	O_NDELAY				0x00000800		0x00000004		0x00000004		0x00000004		0x00000004		0x00000800		# bsd consensus & kNtFileFlagWriteThrough>>8 → 0x00800000 (???)
 syscon	open	O_NONBLOCK				0x00000800		0x00000004		0x00000004		0x00000004		0x00000004		0x00000800		# bsd consensus & faked on nt to be same as linux

libc/sysv/consts/O_TMPFILE.S

@@ -1,2 +1,2 @@
 #include "libc/sysv/consts/syscon.internal.h"
-.syscon open,O_TMPFILE,0x00410000,0,0,0,0,0x04000100
+.syscon open,O_TMPFILE,0x00410000,0,0,0,0,0x00000000

libc/sysv/consts/grnd.h

@@ -4,7 +4,5 @@
 
 #define GRND_NONBLOCK 1
 #define GRND_RANDOM   2
-#define GRND_NORDRND  64
-#define GRND_NOSYSTEM 128
 
 #endif /* COSMOPOLITAN_LIBC_SYSV_CONSTS_GRND_H_ */

libc/sysv/restorert.S

@@ -21,6 +21,10 @@
 .source	__FILE__
 
 //	Linux Signal Trampoline (HOLY CODE)
+__restore_bt:
+	nop
+	.endfn	__restore_bt,globl,hidden
+	nop	# gap so that GetSymbol(st, addr - 1) fails
 	.align	16
 __restore_rt:				# @see gdb/amd64-linux-tdep.c
 	mov	$0x000f,%rax		# [sic]

libc/sysv/systemfive.S

@@ -21,6 +21,7 @@
 #include "libc/sysv/consts/nr.h"
 #include "libc/sysv/consts/map.h"
 #include "libc/macros.internal.h"
+#include "libc/nexgen32e/macros.h"
 
 /*                                           ▄▄▄
                        ▄▄▄                    ▀▓▓▒▄
@@ -238,7 +239,7 @@ _init_systemfive_linux:
 	.endfn	_init_systemfive_linux
 _init_systemfive_metal:
 #if SupportsMetal()
-	pushb	systemfive_linux-.Lanchorpoint
+	pushb	systemfive_enosys-.Lanchorpoint
 	mov	$syscon_linux,%esi
 	jmp	_init_systemfive_os
 #endif