test for NULL params in GenParameters (reason unknown)

marked duplicate definitions of cTypeDelimiter _ANALYSE_IDENT_

fun1 f = fun2
  where
    fun2 :: .c
    fun2
      | g f = undef
    g :: (.b -> .b) -> Bool
    g _ = True

was
  [o u[11651944]:a -> u[11651944]:a]  -> c[11210672]:c
but st_attr_vars was
  [c[11210672], c[11210672]]
(u[11651944] is missing)

  class c m :: *(m Int) -> (m Int)
is not accepted anymore

U is unique but instantiates class variable x that is non uniquely used.

fromString is not yet supported
some error handling improved
parial instances are temporary disabled

2. bugfix for fusion algorithm

ignored the type specification. Now he treats f as a function, and hence
gives a type error

Start = f
  where
    f :: String
    f = 1

  from m import :: :+:

between Clean 1.3 and Clean 2.0

use of the TypeVarHeap.

changed Declaration type
fixed crash when macro appears only in dcl module
added make with caching in 'main'
use BoxedIdent in hashtable

then or else part of such an if node, and not just for
if nodes on root or in else part of such if nodes

incorrect module and type index when the symbol is not defined
or used with incorrect arity. This prevents a crash later in
the compiler when the type is used again when expanding type
synonyms resulting in an 'index out of range' error.

prevent a compiler crash when an abstract type is not defined
in the implementation module