Add tasks for all the new languages

Task/Sort-using-a-custom-comparator/FreeBASIC/sort-using-a-custom-comparator.freebasic

@@ -0,0 +1,48 @@
+' version 23-10-2016
+' compile with: fbc -s console
+
+#Include Once "crt/stdlib.bi" ' for qsort
+
+Function mycmp Cdecl (s1 As Any Pointer, s2 As Any Pointer) As Long
+
+    ' -1 no swap first element before second element
+    '  0 no swap needed, don't care
+    '  1 swap first element after second element
+
+    Dim As String str1 = *Cast(String Ptr, s1)
+    Dim As String str2 = *Cast(String Ptr, s2)
+
+    Dim As Long l1 = Len(str1), l2 = Len(str2)
+    If (l1 > l2) Then Return -1 ' descending
+    If (l1 < l2) Then Return  1 '
+
+    ' there equal length, sort ascending
+    If UCase(str1) = UCase(str2) Then
+        If str1 > str2 Then Return 1
+    Else
+        If UCase(str1) > UCase(str2) Then Return 1
+    End If
+
+    Return 0
+
+End Function
+
+' ------=< MAIN >=------
+
+Dim As String words(0 To ...) = {"Here", "are", "some", "sample", _
+                                 "strings", "to", "be", "sorted" }
+
+Dim As ULong array_size = UBound(words) - LBound(words) + 1
+
+qsort(@words(0), array_size, SizeOf(String), @mycmp)
+
+For i As Integer = 0 To UBound(words)
+    Print words(i)
+Next
+Print
+
+' empty keyboard buffer
+While InKey <> "" : Wend
+Print : Print "hit any key to end program"
+Sleep
+End