from module checksupport to explicitimports,
make ExplImpInfo abstract and don't export DeclaringModulesSet and DeclarationInfo

without scope==cGlobalScope errors are reported about predefined symbols (for example _Nil)

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

remove conversion table, except for macros

bug fix: combination of caching and omitted clasdefs

Universally quantified types used in class members

renamed cNeedStdDynamics as cNeedStdDynamic

moved function get_ident from checksupport to check

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

Tested with compiling Object IO and butstrapping.

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

quality of the generated executable)