Add new AssumeUnchanged test repository

Created through the following

$ git init assume_unchanged_wd && cd assume_unchanged_wd

$ echo "hello" > hello.txt
$ echo "world" > world.txt

$ git add .
$ git commit -m "Initial commit"

$ echo "Hello" > hello.txt
$ echo "World" > world.txt

$ git status
On branch master
Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

        modified:   hello.txt
        modified:   world.txt

no changes added to commit (use "git add" and/or "git commit -a")

$ git update-index --assume-unchanged world.txt

$ git status
On branch master
Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

        modified:   hello.txt

no changes added to commit (use "git add" and/or "git commit -a")

Author: nulltoken

LibGit2Sharp.Tests/Resources/assume_unchanged_wd/dot_git/COMMIT_EDITMSG

@@ -0,0 +1 @@
+Initial commit

LibGit2Sharp.Tests/Resources/assume_unchanged_wd/dot_git/HEAD

@@ -0,0 +1 @@
+ref: refs/heads/master

LibGit2Sharp.Tests/Resources/assume_unchanged_wd/dot_git/config

@@ -0,0 +1,8 @@
+[core]
+	repositoryformatversion = 0
+	filemode = false
+	bare = false
+	logallrefupdates = true
+	symlinks = false
+	ignorecase = true
+	hideDotFiles = dotGitOnly

LibGit2Sharp.Tests/Resources/assume_unchanged_wd/dot_git/index

@@ -0,0 +1,6 @@
+# git ls-files --others --exclude-from=.git/info/exclude
+# Lines that start with '#' are comments.
+# For a project mostly in C, the following would be a good set of
+# exclude patterns (uncomment them if you want to use them):
+# *.[oa]
+# *~

LibGit2Sharp.Tests/Resources/assume_unchanged_wd/dot_git/info/exclude

@@ -0,0 +1 @@
+0000000000000000000000000000000000000000 872129051d644790636b416d1ef1ec830c5f6b90 nulltoken <emeric.fermas@gmail.com> 1422023333 +0100	commit (initial): Initial commit

LibGit2Sharp.Tests/Resources/assume_unchanged_wd/dot_git/logs/HEAD

@@ -0,0 +1 @@
+0000000000000000000000000000000000000000 872129051d644790636b416d1ef1ec830c5f6b90 nulltoken <emeric.fermas@gmail.com> 1422023333 +0100	commit (initial): Initial commit

LibGit2Sharp.Tests/Resources/assume_unchanged_wd/dot_git/logs/refs/heads/master

@@ -0,0 +1,3 @@
+x
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+B1]��>��'��[�������o���U/�Z�n�i"���5�S�Q�hC��.��n��<I!UP�3w�WЎRfS�+U9l�Fu����\�����\�3rD��:����-��
+�:��>=?