win/startup: remove --literal

Fixes 2 failing tests in startup_spec.lua.

The Windows-only `--literal` option complicates support of "stdin-as-text
+ file-args" (#7679).  Could work around it, but it's not worth
the trouble:
- users have a reasonable (and englightening) alternative: nvim +"n *"
- "always literal" is more consistent/predictable
- avoids platform-specific special-case

Unrelated changes:
- Replace fileno(stdxx) with STDXX_FILENO for consistency (not motivated
  by any observed technical reason).

1 files changed, 2 insertions, 2 deletions

diff --git a/test/functional/core/startup_spec.lua b/test/functional/core/startup_spec.lua
index 4223e55d90..d15faaf0a9 100644
--- a/test/functional/core/startup_spec.lua
+++ b/test/functional/core/startup_spec.lua
@@ -108,7 +108,7 @@ describe('startup', function()
                                |
     ]])
   end)
-  it('input from pipe (implicit) + file args #7679', function()
+  it('input from pipe + file args #7679', function()
     eq('ohyeah\r\n0 0 bufs=3',
        funcs.system({nvim_prog, '-n', '-u', 'NONE', '-i', 'NONE', '--headless',
                      '+.print',
@@ -121,7 +121,7 @@ describe('startup', function()
                     { 'ohyeah', '' }))
   end)
 
-  it('stdin with -es, -Es #7679', function()
+  it('stdin with -es/-Es #7679', function()
     local input = { 'append', 'line1', 'line2', '.', '%print', '' }
     local inputstr = table.concat(input, '\n')