[build] Don't pass unix compiler and link args to MSVC

clang-cl accepts both style of options but these will be generally meaningless:
- Static CRT is unnecessary.
- File alignment will be introduced in another commit.
- Wine has partial support for PDB backtrace so there is probably no need to
  insist on DWARF (which is unsupported by real MSVC anyway).
- MSVC doesn't have the weird stdcall ordinal naming convention that
  necessiates fixup and kill-at.

meson.build

@@ -48,6 +48,7 @@ if platform == 'windows'
     '-D_WIN32_WINNT=0xa00',
   ]
 
+  if not dxvk_is_msvc
     link_args += [
       '-static',
       '-static-libgcc',
@@ -71,6 +72,7 @@ if platform == 'windows'
         '-Wl,--kill-at',
       ]
     endif
+  endif
 
   lib_d3d9    = cpp.find_library('d3d9')
   lib_d3d11   = cpp.find_library('d3d11')