of "v314", case defaults and guards now also have file position information.

algorihm so that typing error messages can indicate the alternative in
which the error occured. Before, these error messages always located the
first alternative/function type

specialized correctly during fusion

nieuwe PD_coerce-symbool werd nog niet aangepast.

Removed back end spelling inconsistencies (except for syntax:BackendBody, which will vanish when cases are implemented in the back end)

  #! x = y

will be transformed into

  #! x = _dummyForStrictAlias y

while checking. The new predefined symbol _dummyForStrictAlias has
the type of the identity function. This application will be removed
in the backend conversion phase. In this case x and y will simply get
the same sequence number (see module backendpreprocess). Then the
binding can be ignored.

also STE_Macro. This showed up after a list comprehenshion that matched on
STE_Imported was transformed into a function with that pattern

and the other producers

:: T :== Int

f = { T | f1 = blub }

"PA_BUG" for the same purpose. MW removes his macro _untertaenig_ in favour
of Sjaaks version