Kernel/LibC/DynamicLoader: Update process start ABI

We now use SysV abi for process startup

userspace/libraries/LibC/arch/i686/crt0.S

@@ -2,18 +2,22 @@
 
 .global _start
 _start:
-	pushl $0
+	# get argc, argv, envp
+	movl  (%esp), %edi
+	leal 4(%esp), %esi
+	leal 4(%esi, %edi, 4), %edx
+
+	# align stack
+	andl $-16, %esp
+	xorl %ebp, %ebp
+
+	# save argc, argv, envp
+	subl $4, %esp
 	pushl %edx
 	pushl %esi
 	pushl %edi
 
-	# STACK LAYOUT
-	#   null
-	#   argc
-	#   argv
-	#   envp
-
-	xorl %ebp, %ebp
+	subl $4, %esp
 
 	pushl $__fini_array_end
 	pushl $__fini_array_start