debug symbols should always use the fully qualified names for template arguments
Add DW_OP_GNU_push_tls_address to backend/dwarf2.h
Fix Issue 4181 - GDB prints wrong value of TLS variables

- add DWARF_VERSION to dwarf.h
- emit DW_OP_GNU_push_tls_address or DW_OP_form_tls_address based on DWARF_VERSION
fix Issue 10439 - Deprecate float.min, double.min, real.min
Merge pull request #4053 from tramker/bug4181

Fix Issue 4181 - GDB prints wrong value of TLS variables
Merge pull request #4057 from 9rnsr/fix10439

Issue 10439 - Deprecate float.min, double.min, real.min
Merge pull request #4050 from rainers/issue_13583

Fix Issue 13583: Inconsistent naming of template arguments in debug symbols