Demote git-p4import to contrib status.

Move git-p4import.py and Documentation/git-p4import.txt into
a contrib/p4import directory.   Add a README there directing
people to contrib/fast-import/git-p4 as a better alternative.

Signed-off-by: Sean Estabrooks <seanlkml@sympatico.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/contrib/p4import/README b/contrib/p4import/README
new file mode 100644
index 0000000..b9892b6
--- /dev/null
+++ b/contrib/p4import/README
@@ -0,0 +1 @@
+Please see contrib/fast-import/git-p4 for a better Perforce importer.
diff --git a/git-p4import.py b/contrib/p4import/git-p4import.py
similarity index 100%
rename from git-p4import.py
rename to contrib/p4import/git-p4import.py
diff --git a/Documentation/git-p4import.txt b/contrib/p4import/git-p4import.txt
similarity index 100%
rename from Documentation/git-p4import.txt
rename to contrib/p4import/git-p4import.txt