removed pdclib, strange things were happening..., user shell kinda works now

kernel/scheduler.c

@@ -149,10 +149,16 @@ int create_task(uint32_t entry_point, uint32_t cr3, int user, uint32_t u_esp) {
 }
 
 process_t* current_task() {
+    lock_scheduler();
     process_t* rtn = &process_table[current_process];
+    unlock_scheduler();
     return rtn;
 }
 
+process_t* current_task_unsafe() {
+    return &process_table[current_process];
+}
+
 void sleep(uint32_t ms) {
     if (ms == 0) return;
     lock_scheduler();
@@ -169,3 +175,10 @@ void exit() {
     unlock_scheduler();
 }
 
+void wake(process_t* task) {
+    lock_scheduler();
+    if (task->state == STATE_SLEEPING || task->state == STATE_BLOCKED) {
+        task->state = STATE_READY;
+    }
+    unlock_scheduler();
+}