Added kernel + libl4 changes for full and extended ipc.

- Short ipc working as normal. Full/extended ipc haven't been tested.
- Added automated compilation and inclusion of test executable in test0.

tasks/test0/include/linker.lds

@@ -33,9 +33,9 @@ SECTIONS
 	.data : AT (ADDR(.data) - offset)
 	{
 		. = ALIGN(4K);
-		_start_test1 = .;
-		*(.test1)
-		_end_test1 = .;
+		_start_test_exec = .;
+		*(.testexec)
+		_end_test_exec = .;
 		*(.data)
 	}
 	.bss : AT (ADDR(.bss) - offset) { *(.bss) }

tasks/test0/include/test_exec_linker.lds

@@ -0,0 +1,37 @@
+/*
+ * Simple linker script for userspace or svc tasks.
+ *
+ * Copyright (C) 2007 Bahadir Balban
+ */
+
+/*
+ * The only catch with this linker script is that everything
+ * is linked starting at virtual_base, and loaded starting
+ * at physical_base. virtual_base is the predefined region
+ * of virtual memory for userland applications. physical_base
+ * is determined at build-time, it is one of the subsequent pages
+ * that come after the kernel image's load area.
+ */
+/* USER_AREA_START, see memlayout.h */
+virtual_base = 0x10000000;
+__stack = (0x20000000 - 0x1000 - 8); /* First page before the env/args */
+INCLUDE "include/physical_base.lds"
+
+/* physical_base = 0x228000; */
+offset = virtual_base - physical_base;
+
+ENTRY(_start)
+
+SECTIONS
+{
+	. = virtual_base;
+	_start_text = .;
+	.text : AT (ADDR(.text) - offset) { crt0.o(.text) *(.text) }
+	/* rodata is needed else your strings will link at physical! */
+	.rodata : AT (ADDR(.rodata) - offset) { *(.rodata) }
+	.rodata1 : AT (ADDR(.rodata1) - offset) { *(.rodata1) }
+	. = ALIGN(4K);
+	.data : AT (ADDR(.data) - offset) { *(.data) }
+	.bss : AT (ADDR(.bss) - offset) { *(.bss) }
+	_end = .;
+}