Back to the same fs0 bug point as before, but environment, disjoint utcb addresses

and passing of utcb address information via the environment are implemented.

tasks/mm0/include/env.h

@@ -1,6 +1,6 @@
 #ifndef __MM0_ENV__
 #define __MM0_ENV__
 
-int task_prepare_env_file(struct tcb *t);
+int task_prepare_environment(struct tcb *t);
 
 #endif

tasks/mm0/include/task.h

@@ -63,10 +63,6 @@ struct tcb {
 	/* UTCB address */
 	unsigned long utcb_address;
 
-	/* Temporary storage for environment data */
-	void *env_data;
-	unsigned long env_size;
-
 	/* Per-task environment file */
 	struct vm_file *env_file;