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 (9.14) update-gitignore]
---
diff --git a/.gitignore b/.gitignore
index b544ac38..05fe965c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,3 +29,51 @@ tmp/
 # Ignore Mac OS X generated file/directory attribute storage files
 \.DS_Store
 \._\.DS_Store
+
+# Quilt patch directory
+/.pc/
+
+# Debian build specific leftovers
+/debian/.debhelper/
+/debian/debhelper-build-stamp
+/debian/files
+/debian/*.debhelper.log
+/debian/*.debhelper
+/debian/*.substvars
+/debian/*.substvars
+/debian/libcsirocsa0/
+/debian/libcsironn0/
+/debian/libplplot-data/
+/debian/libplplot-dev/
+/debian/plplot-examples/
+/debian/libplplot-java/
+/debian/libplplot-lua/
+/debian/libplplot-ocaml-dev/
+/debian/libplplot-ocaml/
+/debian/libplplot17/
+/debian/libplplotada3-dev/
+/debian/libplplotada4.1/
+/debian/libplplotcxx15/
+/debian/libplplotfortran0/
+/debian/libplplotqt2/
+/debian/libplplotwxwidgets1/
+/debian/libqsastime-dev/
+/debian/libqsastime0/
+/debian/octave-plplot/
+/debian/plplot-doc/
+/debian/plplot-driver-cairo/
+/debian/plplot-driver-qt/
+/debian/plplot-driver-wxwidgets/
+/debian/plplot-driver-xwin/
+/debian/plplot-tcl-bin/
+/debian/plplot-tcl-dev/
+/debian/plplot-tcl/
+/debian/plplotada.gpr
+debian/python3-plplot-qt/
+debian/python3-plplot/
+
+# Left over from Tcl binding build
+/obj-*/
+
+# Left over from OCaml binding build
+/ocamlinit-stamp
