Debugger: treatment of alias names improved.
Automatically generated Eiffel files removed.
Debugger: treatment of alias names improved.

Moreover:
- Debugger driver: declaration and loading of externals simplified,
file "extern.vala" discarded.
- Debugger: bug in "mark/restore" commands fixed. 
- Debugger specific C function declarations now in file "dg.c" 
to be copied into file "*0.c".
- Persistence: blockwise storing (class PC_BASIC_TARGET) improved.
Debugger: SQL part improved.
This includes:
- Togglebutton "precise/confom" added.
- File "sql_part.vala": class SqlQuery added collecting information 
about the query parts (one object for each descendant type 
of the query's from type). 
- Introspection: bug fix for determining ET_IS_FEATURE_TEXT objects
of inherited features.
- Redefinition of routine "build_dynamic_type_sets" in class
ET_DYNAMIC_PUSH_TYPE_SET_BUILDER removed: the original builds
sets of descendant types (needed here) what the redefinition did not.
- Updating of the debugger manual.

Moreover: 
- Introspection: each IS_*_TYPE class has now a query "base_class"
(not merely the IS_NORMAL_TYPE). The value may be obtained 
rather artificially, but the existence of the query simplifies 
the usuage of IS_*_TYPE objects.
- Bug fix for determining wrap indices (class DG_GENERATOR).
- Several bug fixes in the debugger.
Debugger: runtime behaviour essentially improved.
This includes:
- Function "gedb_stop1" added in file "dg.c" rejecting many potential 
break positions (based on a simple hashmap of important source code positions), 
and function "set_bp_pos_" to fill the hashtable.
- Function "gedb_inform1" added in file "dg.c" rejeecting many potential 
stops for the "End", "Back" commands, and function "set_limits_".
- Classes DG_GENERATOR, DG_EXTENSION, DG_IMPORT  have been adapted 
to generate  the appropriate C code. 

Moreover:
- Debugger: because of inconsistencies, loading of the debuggee (as library) 
is temporarily discarded; the debuggee/debugger pair is now 
a standalone program.
- Introspection: bug in building effector sets of a type fixed 
(type sets did not contain agent types as expected).
- Debugger: treatment of deep info of objects in the persistence  closure 
improved (und bugs fixed).
Some minor bugs of the debugger fixed and layout improved.