[gimp] plug-ins: add Python and JavaScript files to the DIST.

[Jehan <jehanp src gnome org>]

commit ef5c091e58c7174fab589e1ac33d3ed6347d9863
Author: Jehan <jehan girinstud io>
Date:   Fri Aug 16 14:53:19 2019 +0200

    plug-ins: add Python and JavaScript files to the DIST.
    
    So it seems that whatever is in _SCRIPTS is not in the distribution by
    default (I suppose the reason is that even scripts can be generated). So
    let's add the non-generated scripts to EXTRA_DIST.

 plug-ins/goat-exercises/Makefile.am | 4 ++++
 plug-ins/python/Makefile.am         | 4 ++++
 2 files changed, 8 insertions(+)
---
diff --git a/plug-ins/goat-exercises/Makefile.am b/plug-ins/goat-exercises/Makefile.am
index 78321d0356..83e7ad04dd 100644
--- a/plug-ins/goat-exercises/Makefile.am
+++ b/plug-ins/goat-exercises/Makefile.am
@@ -75,3 +75,7 @@ if BUILD_PYTHON
 #goat_exercise_py3dir = $(gimpplugindir)/plug-ins/goat-exercise-py3
 #goat_exercise_py3_SCRIPTS = goat-exercise-py3.py
 endif
+
+EXTRA_DIST = \
+       goat-exercise-gjs.js    \
+       goat-exercise-py3.py
diff --git a/plug-ins/python/Makefile.am b/plug-ins/python/Makefile.am
index 356de5c066..16b7b82e2d 100644
--- a/plug-ins/python/Makefile.am
+++ b/plug-ins/python/Makefile.am
@@ -28,6 +28,10 @@ if GIMP_UNSTABLE
 ##     whirlpinch.py
 endif
 
+EXTRA_DIST = \
+       palette-offset.py               \
+       palette-to-gradient.py
+
 # Python interpreter file.
 
 pyinterpdir = $(gimpplugindir)/interpreters