...where "inline" (in its meaning of "this function can be defined in multiple
translation units") thus doesn't make much sense.  (As discussed in
compilerplugins/clang/redundantinline.cxx, exempt such "static inline" functions
in include files for now.)

All the rewriting has been done automatically by the plugin, except for one
instance in sw/source/ui/frmdlg/column.cxx that used to involve an #if), plus
some subsequent solenv/clang-format/reformat-formatted-files.

Change-Id: Ib8b996b651aeafc03bbdc8890faa05ed50517224
Reviewed-on: https://gerrit.libreoffice.org/61573
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

...warning about (for now only) functions and variables with external linkage
that likely don't need it.

The problems with moving entities into unnamed namespacs and breaking ADL
(as alluded to in comments in compilerplugins/clang/external.cxx) are
illustrated by the fact that while

  struct S1 { int f() { return 0; } };
  int f(S1 s) { return s.f(); }
  namespace N {
    struct S2: S1 { int f() { return 1; } };
    int f(S2 s) { return s.f(); }
  }
  int main() { return f(N::S2()); }

returns 1, both moving just the struct S2 into an nunnamed namespace,

  struct S1 { int f() { return 0; } };
  int f(S1 s) { return s.f(); }
  namespace N {
    namespace { struct S2: S1 { int f() { return 1; } }; }
    int f(S2 s) { return s.f(); }
  }
  int main() { return f(N::S2()); }

as well as moving just the function f overload into an unnamed namespace,

  struct S1 { int f() { return 0; } };
  int f(S1 s) { return s.f(); }
  namespace N {
    struct S2: S1 { int f() { return 1; } };
    namespace { int f(S2 s) { return s.f(); } }
  }
  int main() { return f(N::S2()); }

would each change the program to return 0 instead.

Change-Id: I4d09f7ac5e8f9bcd6e6bde4712608444b642265c
Reviewed-on: https://gerrit.libreoffice.org/60539
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

Change-Id: I2810468e64bba8bc9f8af4dff170bc1ab310fe2f
Reviewed-on: https://gerrit.libreoffice.org/58337
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>