Use Vista as cutoff

XP 64 or Server 2003 are version 5.2, apparently

base/fs.jl

@@ -159,8 +159,8 @@ end
 
 @windows_only const UV_FS_SYMLINK_JUNCTION = 0x0002
 function symlink(p::AbstractString, np::AbstractString)
- @windows_only if Base.windows_version() <= Base.WINDOWS_XP_VER
- error("WindowsXP does not support soft symlinks")
+ @windows_only if Base.windows_version() < Base.WINDOWS_VISTA_VER
+ error("Windows XP does not support soft symlinks")
  end
  flags = 0
  @windows_only if isdir(p); flags |= UV_FS_SYMLINK_JUNCTION; p = abspath(p); end

base/osutils.jl

@@ -55,4 +55,4 @@ end
 end
 @unix_only windows_version() = (0,0)
 
-WINDOWS_XP_VER = (5,1)
+WINDOWS_VISTA_VER = (6,0)

base/pkg/cache.jl

@@ -13,7 +13,7 @@ function mkcachedir()
  return
  end
 
- @windows_only if Base.windows_version() <= Base.WINDOWS_XP_VER
+ @windows_only if Base.windows_version() < Base.WINDOWS_VISTA_VER
  mkdir(cache)
  return
  end

test/backtrace.jl

@@ -18,7 +18,7 @@ end
 dlls = Libdl.dllist()
 @test !isempty(dlls)
 @test length(dlls) > 3 # at a bare minimum, probably have some version of libstdc, libgcc, libjulia, ...
-if @unix? true : (Base.windows_version() > Base.WINDOWS_XP_VER)
+if @unix? true : (Base.windows_version() >= Base.WINDOWS_VISTA_VER)
  @test Base.samefile(Libdl.dlpath(dlls[1]), dlls[1])
  @test Base.samefile(Libdl.dlpath(dlls[end]), dlls[end])
 end

test/file.jl

@@ -14,7 +14,7 @@ mkdir(subdir)
 subdir2 = joinpath(dir, "adir2")
 mkdir(subdir2)
 
-if @unix? true : (Base.windows_version() > Base.WINDOWS_XP_VER)
+if @unix? true : (Base.windows_version() >= Base.WINDOWS_VISTA_VER)
  dirlink = joinpath(dir, "dirlink")
  symlink(subdir, dirlink)
  # relative link
@@ -70,7 +70,7 @@ end
 @unix_only @test islink(link) == true
 @unix_only @test readlink(link) == file
 
-if @unix? true : (Base.windows_version() > Base.WINDOWS_XP_VER)
+if @unix? true : (Base.windows_version() >= Base.WINDOWS_VISTA_VER)
  @test islink(dirlink) == true
  @test isdir(dirlink) == true
  @test readlink(dirlink) == subdir * @windows? "\\" : ""
@@ -441,7 +441,7 @@ rm(cfile)
 
 # issue #10506 #10434
 ## Tests for directories and links to directories
-if @unix? true : (Base.windows_version() > Base.WINDOWS_XP_VER)
+if @unix? true : (Base.windows_version() >= Base.WINDOWS_VISTA_VER)
  function setup_dirs(tmpdir)
  srcdir = joinpath(tmpdir, "src")
  hidden_srcdir = joinpath(tmpdir, ".hidden_srcdir")
@@ -729,7 +729,7 @@ end
  rm(link)
  rm(rellink)
 end
-if @unix? true : (Base.windows_version() > Base.WINDOWS_XP_VER)
+if @unix? true : (Base.windows_version() >= Base.WINDOWS_VISTA_VER)
  rm(dirlink)
  rm(relsubdirlink)
 end

test/repl.jl

@@ -27,7 +27,7 @@ ccall(:jl_exit_on_sigint, Void, (Cint,), 0)
 # in the mix. If verification needs to be done, keep it to the bare minimum. Basically
 # this should make sure nothing crashes without depending on how exactly the control
 # characters are being used.
-if @unix? true : (Base.windows_version() > Base.WINDOWS_XP_VER)
+if @unix? true : (Base.windows_version() >= Base.WINDOWS_VISTA_VER)
 stdin_write, stdout_read, stdout_read, repl = fake_repl()
 
 repl.specialdisplay = Base.REPL.REPLDisplay(repl)
@@ -277,7 +277,7 @@ close(master)
 end
 
 # Test stream mode
-if @unix? true : (Base.windows_version() > Base.WINDOWS_XP_VER)
+if @unix? true : (Base.windows_version() >= Base.WINDOWS_VISTA_VER)
  outs, ins, p = readandwrite(`$exename --startup-file=no --quiet`)
  write(ins,"1\nquit()\n")
  @test readall(outs) == "1\n"

test/socket.jl

@@ -162,7 +162,7 @@ begin
  close(a)
  close(b)
 end
-if @unix? true : (Base.windows_version() > Base.WINDOWS_XP_VER)
+if @unix? true : (Base.windows_version() >= Base.WINDOWS_VISTA_VER)
  a = UDPSocket()
  b = UDPSocket()
  bind(a, ip"::1", UInt16(port))