Make garbage collection thread safe

- You can now use _gc(malloc()) in multithreaded programs
- This change fixes a bug where fork() on NT disabled TLS
- Fixed TLS code morphing on XNU/NT, for R8-R15 registers

tool/build/lib/elfwriter.c

@@ -17,6 +17,7 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/assert.h"
+#include "libc/calls/calls.h"
 #include "libc/elf/def.h"
 #include "libc/log/check.h"
 #include "libc/mem/arraylist2.internal.h"

tool/build/lib/psk.c

@@ -16,10 +16,12 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/calls/calls.h"
 #include "libc/calls/struct/stat.h"
 #include "libc/log/check.h"
 #include "libc/mem/mem.h"
 #include "libc/runtime/gc.internal.h"
+#include "libc/runtime/runtime.h"
 #include "libc/sysv/consts/o.h"
 #include "libc/x/x.h"
 #include "tool/build/lib/psk.h"

tool/hash/hash.mk

@@ -22,6 +22,7 @@ TOOL_HASH_DIRECTDEPS =				\
 	LIBC_RUNTIME				\
 	LIBC_STDIO				\
 	LIBC_STR				\
+	LIBC_MEM				\
 	LIBC_STUBS
 
 TOOL_HASH_DEPS :=				\

tool/viz/printimage.c

@@ -21,6 +21,7 @@
 #include "dsp/scale/scale.h"
 #include "dsp/tty/quant.h"
 #include "dsp/tty/tty.h"
+#include "libc/calls/calls.h"
 #include "libc/calls/ioctl.h"
 #include "libc/calls/struct/stat.h"
 #include "libc/calls/struct/winsize.h"