Add tasks for all the new languages

Task/Logical-operations/Phix/logical-operations-1.phix

@@ -0,0 +1,25 @@
+--constant TRUE = (1=1),        -- 1 internally     \ now pre-
+--         FALSE = not TRUE     -- 0 internally     / defined
+type boolean(object b)
+    return integer(b) and find(b,{TRUE,FALSE})!=0
+end type
+
+function logicop(boolean a, boolean b)
+    return {a, b, a and b, a or b, not a, a xor b, a=b, a!=b}
+end function
+
+function TF(sequence tf)
+boolean tfi
+    for i=1 to length(tf) do
+        tfi = tf[i]
+        tf[i] = iff(tfi?'T','F')
+    end for
+    return tf
+end function
+
+printf(1," a  b and or not xor = !=\n")
+for a=FALSE to TRUE do  -- nb: TRUE to FALSE would need a "by -1".
+    for b=FALSE to TRUE do
+        printf(1,"%2c %2c  %c  %c   %c   %c  %c %c\n",TF(logicop(a,b)))
+    end for
+end for

Task/Logical-operations/Phix/logical-operations-2.phix

@@ -0,0 +1,10 @@
+function logiicop(integer a, integer b)
+    return {a, b, a and b, a or b, not a, a xor b, a=b, a!=b}
+end function
+
+printf(1," a  b and or not xor = !=\n")
+for a=0 to 1 do
+    for b=0 to 1 do
+        printf(1,"%2d %2d  %d  %d   %d   %d  %d %d\n",logiicop(a,b))
+    end for
+end for