Fix issue 10338
Add no-op virtual destructor to Condition.

Silences GCC's "has virtual functions and accessible
non-virtual destructor" warning.
Merge pull request #2163 from klickverbot/trivial-fixes

Add no-op virtual destructor to Condition.
fix Issue 10274

- Elf64 uses only the explicit addends of a relocation.
  It seems like ld.bfd still adds the value at the to be
  relocated address, but ld.gold does not.
Merge pull request #2166 from mxfm/fixlink

[trivial] Minor issue in link.c
Merge pull request #2164 from dawgfoto/fix10724

fix Issue 10274 - DMD 2.063 produces broken binaries