Call .Bool instead of .true for truthiness. Doesn't actually call .Bo…

…ol for user-defined classes, though?

src/builtins/Junction.pir

@@ -125,14 +125,14 @@ Return perl representation.  (This should actually be autothreaded.)
 .end
 
 
-=item true()
+=item Bool()
 
 Evaluate Junction as a boolean.
 
 =cut
 
 .namespace ['Junction']
-.sub 'true' :method
+.sub 'Bool' :method
     .local pmc eigenstates, it
     .local int type
     eigenstates = self.'eigenstates'()
@@ -247,7 +247,7 @@ Return the components of the Junction.
 
 .namespace ['Junction']
 .sub '' :method :vtable('get_bool')
-    $I0 = self.'true'()
+    $I0 = self.'Bool'()
     .return ($I0)
 .end
 

src/builtins/ListIterator.pir

@@ -42,13 +42,13 @@ returns a Failure.
 .end
 
 
-=item true()
+=item Bool()
 
 Returns true if the iterator has not reached the end of the list.
 
 =cut
 
-.sub 'true' :method
+.sub 'Bool' :method
     .local pmc list, index, values
     list = getattribute self, '$!list'
     index = getattribute self, '$!index'

src/builtins/Mu.pir

@@ -461,7 +461,7 @@ Gets the object's identity value
 .end
 
 .sub '' :vtable('get_bool') :method
-    $I0 = self.'true'()
+    $I0 = self.'Bool'()
     .return ($I0)
 .end
 

src/core/Mu.pm

@@ -1,5 +1,5 @@
 augment class Mu {
-    method true { $.defined }
+    method Bool { $.defined }
 
     multi method notdef() { !self.defined; }
 }