[gimp] build, extensions, po-windows-installer: update gitignore.

[Jehan <jehanp src gnome org>]

commit 58353a940a109abb9f08d387d93465431ee7cca8
Author: Jehan <jehan girinstud io>
Date:   Mon Mar 28 21:46:02 2022 +0200

    build, extensions, po-windows-installer: update gitignore.

 build/windows/installer/lang/.gitignore | 3 ++-
 extensions/goat-exercises/.gitignore    | 1 +
 po-windows-installer/.gitignore         | 1 +
 3 files changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/build/windows/installer/lang/.gitignore b/build/windows/installer/lang/.gitignore
index d1dfddc581..eaf94f9aa7 100644
--- a/build/windows/installer/lang/.gitignore
+++ b/build/windows/installer/lang/.gitignore
@@ -1,5 +1,6 @@
 /Makefile
 /Makefile.in
 /setup.isl
+/setup.isl.in
 /*.setup.isl
-/isl-stamp
+/stamp-isl
diff --git a/extensions/goat-exercises/.gitignore b/extensions/goat-exercises/.gitignore
index 4b463249d4..652a035ca0 100644
--- a/extensions/goat-exercises/.gitignore
+++ b/extensions/goat-exercises/.gitignore
@@ -6,3 +6,4 @@
 /goat-exercise-c.exe
 /goat-exercise-vala.c
 /goat_exercise_vala_vala.stamp
+/org.gimp.extension.goat-exercises.metainfo.xml.in
diff --git a/po-windows-installer/.gitignore b/po-windows-installer/.gitignore
index 8178716b61..11dfbcd2a4 100644
--- a/po-windows-installer/.gitignore
+++ b/po-windows-installer/.gitignore
@@ -2,6 +2,7 @@
 /*.mo
 /*.pot
 /.intltool-merge-cache
+/.intltool-merge-cache.lock
 /Makefile
 /Makefile.in
 /POTFILES