Fix Windows-related -c options in match_baseline_files

The `match_baseline_files.sh` fixture script adds entries to the
index using `git update-index --add --cacheinfo`. These entries
don't exist on disk, so it should be okay that some would cause
problems on Windows if an attempt were made to actually create
them. The tests that use the generated repository work on Windows.

It is intended that the fixture script also be able to run on
Windows, and Windows-related `-c` options are passed in commands
where they are expected to be needed: `core.ignoreCase=false` and
`core.protectNTFS=false`.

But the fixture script nonetheless was failing on Windows because
two commands that don't need `core.ignoreCase=false` but *do* need
`core.protectNTFS=false` had `core.ignorecase=false` instead. This
corrects that.

This fixes two of the long-standing `GIX_TEST_IGNORE_ARCHIVES=1`
Windows failures reported in GitoxideLabs#1358:

- gix-pathspec::pathspec search::files
- gix-pathspec::pathspec search::prefixes_are_always_case_sensitive

Author: EliahKagan

etc/test-fixtures-windows-expected-failures-see-issue-1358.txt

@@ -2,8 +2,6 @@ gix-glob::glob pattern::matching::compare_baseline_with_ours
 gix-pathspec::pathspec parse::baseline
 gix-pathspec::pathspec parse::valid::glob_negations_are_always_literal
 gix-pathspec::pathspec parse::valid::whitespace_in_pathspec
-gix-pathspec::pathspec search::files
-gix-pathspec::pathspec search::prefixes_are_always_case_sensitive
 gix-submodule::submodule file::baseline::common_values_and_names_by_path
 gix-submodule::submodule file::is_active_platform::pathspecs_matter_even_if_they_do_not_match
 gix-submodule::submodule file::is_active_platform::submodules_with_active_config_are_considered_active_or_inactive

gix-pathspec/tests/fixtures/generated-archives/match_baseline_files.tar

@@ -32,8 +32,8 @@ git update-index --add --cacheinfo 100644 "$(git rev-parse HEAD:goo)" "!a"
 for p in bar bAr BAR foo/bar foo/bAr foo/BAR fOo/bar fOo/bAr fOo/BAR FOO/bar FOO/bAr FOO/BAR; do
   git -c core.ignoreCase=false update-index --add --cacheinfo 100644 "$(git rev-parse HEAD:goo)" "$p"
 done
-git -c core.ignoreCase=false update-index --add --cacheinfo 100644 "$(git rev-parse HEAD:goo)" "    " # 4 x space
-git -c core.ignoreCase=false update-index --add --cacheinfo 100644 "$(git rev-parse HEAD:goo)" "  hi  " # 2 x space hi 2 x space
+git -c core.protectNTFS=false update-index --add --cacheinfo 100644 "$(git rev-parse HEAD:goo)" "    " # 4 x space
+git -c core.protectNTFS=false update-index --add --cacheinfo 100644 "$(git rev-parse HEAD:goo)" "  hi  " # 2 x space hi 2 x space
 
 git ls-files > paths