Created libc under containers/posix which now all tasks use to build.

There is a problem in the new libc that test0 now misbehaves. Going to be fixed.

containers/posix/fs0/include/lib/malloc.h

@@ -3,6 +3,12 @@
 
 #include <stddef.h>
 #include <string.h>
+#ifndef NULL
+#define NULL	0
+#endif
+#ifndef size_t
+#define size_t int
+#endif
 
 void *kmalloc(size_t size);
 void kfree(void *blk);

containers/posix/fs0/include/linker.lds

@@ -26,7 +26,7 @@ SECTIONS
 {
 	. = virtual_base;
 	_start_text = .;
-	.text : AT (ADDR(.text) - offset) { crt0.o(.text) *(.text) }
+	.text : AT (ADDR(.text) - offset) { *(.text.head) *(.text) }
 	/* rodata is needed else your strings will link at physical! */
 	.rodata : AT (ADDR(.rodata) - offset) { *(.rodata) }
 	.rodata1 : AT (ADDR(.rodata1) - offset) { *(.rodata1) }

containers/posix/fs0/include/vfs.h

@@ -6,7 +6,7 @@
 #include <l4/lib/list.h>
 #include <memfs/memfs.h>
 #include <l4/macros.h>
-#include <stdio.h>
+#include <printf.h>
 #include <task.h>
 #include <path.h>