Add minexec sources

Not yet in Makefile though.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>

minexec.S

+#include "syscal-codes.h"
+
+#define SIGSTOP			19
+
+	.code64
+
+	.global _start
+_start:
+1:
+	/*
+	 * Simply put self into stopped state,
+	 * the restorer will resume us anyway.
+	 */
+	movl	$__NR_getpid, %eax
+	syscall
+	movl	%eax, %edi
+	movl	$__NR_kill, %eax
+	movl	$SIGSTOP, %esi
+	syscall
+	jmp 1b

minexec.ld.S

+OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
+OUTPUT_ARCH(i386:x86-64)
+
+SECTIONS
+{
+	. = 0x400000;
+	ENTRY(_start)
+
+	.text : {
+		*(.text)
+		. = ALIGN(8);
+	}
+
+	.data ALIGN(0x2000) : {
+		*(.data)
+		*(.bss)
+		. = ALIGN(8);
+	}
+}