prevent crash when writing .tcl file with extensible algebraic types (not yet implement in the dynamic linker)

add type constraints in constructors and function arguments with universal quantifier (from iTask branch)

remove import of StdCompare in checksupport.dcl,
changed some other imports

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also requires new linkers

requires new linkers

remove unused field stv_count in STE_BoundTypeVariable,
remove unused argument def_macros of type CollectedDefinitions

this removes a platform dependency from the frontend

s/\<mod_name\>/mod_ident/g
s/\<ps_field_name\>/ps_field_ident/g
s/\<ps_selector_name\>/ps_selector_ident/g
s/\<pc_cons_name\>/pc_cons_ident/g
s/\<class_name\>/class_ident/g
s/\<gen_name\>/gen_ident/g
s/\<gen_member_name\>/gen_member_ident/g
s/\<gc_name\>/gc_ident/g
s/\<gc_gname\>/gc_gident/g
s/\<fs_name\>/fs_ident/g
s/\<td_name\>/td_ident/g
s/\<fv_name\>/fv_ident/g
s/\<var_name\>/var_ident/g
s/\<type_name\>/type_ident/g
s/\<symb_name\>/symb_ident/g
s/\<tv_name\>/tv_ident/g
s/\<av_name\>/av_ident/g
s/\<me_symb\>/me_ident/g
s/\<ft_symb\>/ft_ident/g
s/\<fun_symb\>/fun_ident/g
s/\<cons_symb\>/cons_ident/g
s/\<sd_symb\>/sd__ident/g

to fix a bug if type synonyms are used and a .tcl file
is generated

  dynamic pattern matches and types passed to type dependent functions.
- added !Bool-field to GTT_Constructor
- changed overloading, type and convertDynamics to propagate the type
  information

- each placeholder now has two arguments

* In order to use dynamics, a new compiler, {static,dynamic}-linker and a new
 StdDynamicEnv are necessary.

* predef; replace *some* strings by macro's
* small changes

use of the TypeVarHeap.

- module type_io_common added for communication with linkers
- minor change to convertDynamics w.r.t writing a tcl-file

stderr annoyance should be fixed

Tested with compiling Object IO and butstrapping.

- type variables
- passing a list of directly imported dcl modules by an icl modules

proper type information.