Initial JGit contribution to eclipse.org

Per CQ 3448 this is the initial contribution of the JGit project
to eclipse.org.  It is derived from the historical JGit repository
at commit 3a2dd9921c8a08740a9e02c421469e5b1a9e47cb.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..f57840b
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.java diff=java