Unify instruction namings also dirs

Was getting confused myself, where it was instruction or instructions, when if the base class was inside or out of dir.
Now dirs are plural, and base class is inside.

test/slot_machine/instructions/test_resolve_method.rb

@@ -0,0 +1,72 @@
+require_relative "helper"
+
+module SlotMachine
+  class TestResolveMethod < SlotMachineInstructionTest
+    include Parfait::MethodHelper
+
+    def instruction
+      method = make_method
+      cache_entry = Parfait::CacheEntry.new(method.frame_type, method)
+      ResolveMethod.new( "method" , :name , cache_entry )
+    end
+    def test_len
+      assert_equal 19 , all.length , all_str
+    end
+    def test_1_load_name
+      assert_load risc(1) , Symbol , :r1
+      assert_equal :name , risc(1).constant
+    end
+    def test_2_load_cache
+      assert_load risc(2) , Parfait::CacheEntry , :r2
+    end
+    def test_3_get_cache_type
+      assert_slot_to_reg risc(3) ,:r2 , 1 , :r3
+    end
+    def test_4_get_type_methods
+      assert_slot_to_reg risc(4) ,:r3 , 4 , :r4
+    end
+    def test_5_start_label
+      assert_label risc(5) , "while_start_"
+    end
+    def test_6_load_nil
+      assert_load risc(6) , Parfait::NilClass , :r5
+    end
+    def test_7_check_nil
+      assert_operator risc(7) , :- , :r5 , :r4
+    end
+    def test_8_nil_branch
+      assert_zero risc(8) , "exit_label_"
+    end
+    def test_9_get_method_name
+      assert_slot_to_reg risc(9) ,:r4 , 6 , :r6
+    end
+    #              Syscall, Label, RegToSlot,] #20
+    def test_10_check_name
+      assert_operator risc(10) , :- , :r6 , :r1
+    end
+    def test_11_nil_branch
+      assert_zero risc(11) , "ok_label_"
+    end
+    def test_12_get_next_method
+      assert_slot_to_reg risc(12) ,:r4 , 2 , :r4
+    end
+    def test_13_continue_while
+      assert_branch risc(13) , "while_start_"
+    end
+    def test_14_goto_exit
+      assert_label risc(14) , "exit_label_"
+    end
+    def test_15_move_name
+      assert_transfer( risc(15) , :r1 , :r1)
+    end
+    def test_16_die
+      assert_syscall risc(16) , :died
+    end
+    def test_17_label
+      assert_label risc(17) , "ok_label_"
+    end
+    def test_18_load_method
+      assert_reg_to_slot risc(18) , :r4 , :r2 , 2
+    end
+  end
+end