Subject: Update .gitignore from Debian packaging branch

The Debian packaging git branch contains these updates to the upstream
.gitignore file(s).  This patch is autogenerated, to provide these
updates to users of the official Debian archive view of the package.

[dgit (12.11) update-gitignore]
---
diff --git a/.gitignore b/.gitignore
index cccd74c50..79df4b1ba 100755
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,9 @@
+# Begin Debian additions
+/.pc
+/interfaces/cc/gcc/aarch64
+/obj-*
+# End Debian additions
+
 user.status
 vgcore.*
 /bin64
