Write tests for new APE loader and fix bugs

- Add FreeBSD-specific mmap() flags
- Reduce size of the APE loader from 8kb to 4kb
- Work towards fixing the Makefile build on WSL
- Automate testing of APE no-modify-self behaviors
- Make the ape.S shell script code cleaner and tinier
- Improve the APE sanity check to test behavior better
- Fixed issue with ShowCrashReports() sigaltstack() on BSDs
- Delete symbols for S_MODE magnums which wasted compile time

If you checked out yesterday's APE commit, please run:

    rm -f /usr/bin/ape o/tmp/ape /tmp/ape "${TMPDIR:-/tmp}/ape"

Because this change fixes certain aspects of the new ABI. We don't have
automated migrations for APE loader versions yet. Thanks! You can also
download prebuilt binaries here:

- https://justine.lol/ape.elf    (Linux/FreeBSD/NetBSD/OpenBSD)
- https://justine.lol/ape.macho  (Apple)

Install the appropriate one as `/usr/bin/ape`.

tool/build/lib/apetest.c

@@ -0,0 +1,23 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2022 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ Permission to use, copy, modify, and/or distribute this software for         │
+│ any purpose with or without fee is hereby granted, provided that the         │
+│ above copyright notice and this permission notice appear in all copies.      │
+│                                                                              │
+│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
+│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
+│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
+│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
+│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
+│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
+│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
+│ PERFORMANCE OF THIS SOFTWARE.                                                │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/calls/calls.h"
+
+int main(int argc, char *argv[]) {
+  write(1, "success\n", 8);
+}

tool/build/lib/buildlib.mk

@@ -9,7 +9,9 @@ TOOL_BUILD_LIB_A = o/$(MODE)/tool/build/lib/buildlib.a
 TOOL_BUILD_LIB_A_FILES := $(wildcard tool/build/lib/*)
 TOOL_BUILD_LIB_A_HDRS = $(filter %.h,$(TOOL_BUILD_LIB_A_FILES))
 TOOL_BUILD_LIB_A_SRCS_S = $(filter %.S,$(TOOL_BUILD_LIB_A_FILES))
-TOOL_BUILD_LIB_A_SRCS_C = $(filter %.c,$(TOOL_BUILD_LIB_A_FILES))
+
+TOOL_BUILD_LIB_A_SRCS_C =				\
+	$(filter-out tool/build/lib/apetest.c,$(filter %.c,$(TOOL_BUILD_LIB_A_FILES)))
 
 TOOL_BUILD_LIB_A_CHECKS =				\
 	$(TOOL_BUILD_LIB_A_HDRS:%=o/$(MODE)/%.ok)	\
@@ -19,9 +21,15 @@ TOOL_BUILD_LIB_A_SRCS =					\
 	$(TOOL_BUILD_LIB_A_SRCS_S)			\
 	$(TOOL_BUILD_LIB_A_SRCS_C)
 
+TOOL_BUILD_LIB_COMS =					\
+	o/$(MODE)/tool/build/lib/apetest.com		\
+	o/$(MODE)/tool/build/lib/apetest2.com
+
 TOOL_BUILD_LIB_A_OBJS =					\
 	$(TOOL_BUILD_LIB_A_SRCS_S:%.S=o/$(MODE)/%.o)	\
-	$(TOOL_BUILD_LIB_A_SRCS_C:%.c=o/$(MODE)/%.o)
+	$(TOOL_BUILD_LIB_A_SRCS_C:%.c=o/$(MODE)/%.o)	\
+	o/$(MODE)/tool/build/lib/apetest.com.zip.o	\
+	o/$(MODE)/tool/build/lib/apetest2.com.zip.o
 
 TOOL_BUILD_LIB_A_DIRECTDEPS =				\
 	LIBC_ALG					\
@@ -67,6 +75,25 @@ o/$(MODE)/tool/build/lib/ssefloat.o:			\
 		TARGET_ARCH +=				\
 			-msse3
 
+o/$(MODE)/tool/build/lib/apetest.com.dbg:		\
+		$(TOOL_BUILD_LIB_A_DEPS)		\
+		o/$(MODE)/tool/build/lib/apetest.o	\
+		$(CRT)					\
+		$(APE_NO_MODIFY_SELF)
+	@$(APELINK)
+
+o/$(MODE)/tool/build/lib/apetest2.com.dbg:		\
+		$(TOOL_BUILD_LIB_A_DEPS)		\
+		o/$(MODE)/tool/build/lib/apetest.o	\
+		$(CRT)					\
+		$(APE_COPY_SELF)
+	@$(APELINK)
+
+o/$(MODE)/tool/build/lib/apetest.com.zip.o		\
+o/$(MODE)/tool/build/lib/apetest2.com.zip.o:		\
+		ZIPOBJ_FLAGS +=				\
+			-B
+
 TOOL_BUILD_LIB_LIBS = $(foreach x,$(TOOL_BUILD_LIB_ARTIFACTS),$($(x)))
 TOOL_BUILD_LIB_SRCS = $(foreach x,$(TOOL_BUILD_LIB_ARTIFACTS),$($(x)_SRCS))
 TOOL_BUILD_LIB_HDRS = $(foreach x,$(TOOL_BUILD_LIB_ARTIFACTS),$($(x)_HDRS))
@@ -76,4 +103,6 @@ TOOL_BUILD_LIB_OBJS = $(foreach x,$(TOOL_BUILD_LIB_ARTIFACTS),$($(x)_OBJS))
 TOOL_BUILD_LIB_TESTS = $(foreach x,$(TOOL_BUILD_LIB_ARTIFACTS),$($(x)_TESTS))
 
 .PHONY: o/$(MODE)/tool/build/lib
-o/$(MODE)/tool/build/lib: $(TOOL_BUILD_LIB_CHECKS)
+o/$(MODE)/tool/build/lib:				\
+		$(TOOL_BUILD_LIB_COMS)			\
+		$(TOOL_BUILD_LIB_CHECKS)

tool/net/redbean.c

@@ -7305,7 +7305,6 @@ void RedBean(int argc, char *argv[]) {
 #else
   GetHostsTxt();    // for effect
   GetResolvConf();  // for effect
-  __print_maps();
   if (daemonize || uniprocess || !linenoiseIsTerminal()) {
     EventLoop(HEARTBEAT);
   } else if (IsWindows()) {