Missing debug info (dwarf-2/3) for resourcestring

Original Reporter info from Mantis: Martin @martin_frb

• Reporter name: Martin Friebe

Description:

resourcestring
  r = 'AB129';
  ru = UnicodeString('ab123');

generates debug info (dwarf) like 
 <1><842>: Abbrev Number: 4 (DW_TAG_variable)
    <843>   DW_AT_name        : R	
    <845>   DW_AT_const_value : 	
 <1><846>: Abbrev Number: 4 (DW_TAG_variable)
    <847>   DW_AT_name        : RU	
    <84a>   DW_AT_const_value : 	

No type, and no data.

Also: Should a resourcestring be DW_AT_const_value ?
It can be translated, and therefore change value.

Mantis conversion info:

• Mantis ID: 35571
• OS: win 10
• OS Build: 10
• Platform: 64bit Intel
• Version: 3.3.1