don't de-duplicate flags: "-param l1-cache-line-size=64 --param l1-ca…

…che-size=32 --param l2-cache-size=8192" should all be preserved (and not just keep the last value)

git-svn-id: https://xpra.org/svn/Xpra/trunk@14933 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/setup.py

@@ -680,9 +680,6 @@ def exec_pkgconfig(*pkgs_options, **ekw):
                     add_to_keywords(kw, flag_map.get(token[:2]), token[2:])
                 else: # throw others to extra_link_args
                     add_to_keywords(kw, 'extra_link_args', token)
-                for k, v in kw.items(): # remove duplicates
-                    seen = set()
-                    kw[k] = [x for x in v if x not in seen and not seen.add(x)]
     if warn_ENABLED:
         if is_msvc():
             add_to_keywords(kw, 'extra_compile_args', "/Wall")