Elevate .text.syscall to .privileged

It turns out adding OpenBSD msyscall() origin verification broke the
--ftrace flag. The executable needs to issue raw syscalls while it's
rewriting itself. So they need to be in the same section, and that's
just plain simpler too.

libc/sysv/restorert.S

@@ -17,7 +17,7 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/macros.h"
-.text.syscall
+.privileged
 .source	__FILE__
 
 /	Linux Signal Trampoline (HOLY CODE)

libc/sysv/systemfive.S

@@ -103,7 +103,7 @@ __systemfive:
 	.endobj	__systemfive,globl,hidden
 	.previous
 
-	.text.syscall
+	.privileged
 .Lanchorpoint:
 systemfive.linux:
 	and	$0xfff,%eax
@@ -332,10 +332,10 @@ systemfive.init.syscall:
 	js	systemfive.init.done
 	push	%rdi
 	push	%rsi
-	.weak	__text_syscall_addr
-	.weak	__text_syscall_size
-	mov	$__text_syscall_addr,%edi
-	mov	$__text_syscall_size,%esi
+	.weak	__privileged_addr
+	.weak	__privileged_size
+	mov	$__privileged_addr,%edi
+	mov	$__privileged_size,%esi
 	syscall
 	pop	%rsi
 	pop	%rdi