[gimp] plug-ins: add more generated files in .gitignore.

[Jehan <jehanp src gnome org>]

commit cb892aa0e65739b410ee8ed90542f7d82ac5358d
Author: Jehan <jehan girinstud io>
Date:   Sat Sep 29 23:16:40 2018 +0200

    plug-ins: add more generated files in .gitignore.

 plug-ins/pygimp/plug-ins/.gitignore | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/plug-ins/pygimp/plug-ins/.gitignore b/plug-ins/pygimp/plug-ins/.gitignore
index 3a28f0daba..2eb40a7d58 100644
--- a/plug-ins/pygimp/plug-ins/.gitignore
+++ b/plug-ins/pygimp/plug-ins/.gitignore
@@ -2,6 +2,8 @@
 /Makefile.in
 /*.pyc
 /*.pyo
+/benchmark-foreground-extract/benchmark-foreground-extract.py
+/clothify/clothify.py
 /colorxhtml/colorxhtml.py
 /file-openraster/file-openraster.py
 /foggify/foggify.py
@@ -12,3 +14,6 @@
 /palette-to-gradient/palette-to-gradient.py
 /py-slice/py-slice.py
 /python-eval/python-eval.py
+/shadow_bevel/shadow_bevel.py
+/sphere/sphere.py
+/whirlpinch/whirlpinch.py