5.1.1

Fixed

• c/c++: Use more appropriate versions of clangd and clang-format when
  cross-compiling since the target platform does not actually
  matter.
• c/c++: Use a debugger for the shell that comes from buildPackages
  to get the correct hostPlatform when cross-compiling.
• c/c++: Enabling doxygen required the name attribute. Now,
  pname is enough as well.
• c/c++: Use a more appropriate variant of fd, since it
  does not depend on the target platform when cross-compiling.