build: add Galician to the Windows installer scripts.

Now that we have a brand new Galician translation for the Windows
installer.

build/windows/gitlab-ci/installer-gimp-msys2.sh

@@ -40,6 +40,7 @@ download_lang ChineseTraditional.isl
 add_bom ChineseTraditional.isl
 download_lang EnglishBritish.isl
 download_lang Esperanto.isl
+download_lang Galician.isl
 download_lang Greek.isl
 download_lang Hungarian.isl
 download_lang Indonesian.isl

build/windows/installer/gimp3264.iss

@@ -190,6 +190,7 @@ Name: "es"; MessagesFile: "compiler:Languages\Spanish.isl,lang\es.setup.isl"
 Name: "eu"; MessagesFile: "compiler:Languages\Unofficial\Basque.isl,lang\eu.setup.isl"
 Name: "fi"; MessagesFile: "compiler:Languages\Finnish.isl,lang\fi.setup.isl"
 Name: "fr"; MessagesFile: "compiler:Languages\French.isl,lang\fr.setup.isl"
+Name: "gl"; MessagesFile: "compiler:Languages\Unofficial\Galician.isl,lang\gl.setup.isl"
 Name: "he"; MessagesFile: "compiler:Languages\Hebrew.isl,lang\he.setup.isl"
 Name: "hu"; MessagesFile: "compiler:Languages\Unofficial\Hungarian.isl,lang\hu.setup.isl"
 ;Name: "hr"; MessagesFile: "compiler:Languages\Unofficial\Croatian.isl,lang\hr.setup.isl"

build/windows/installer/lang/Makefile.am

@@ -20,6 +20,7 @@ languages = \
 	eu:[eu]		\
 	fi:[fi]		\
 	fr:[fr]		\
+	gl:[gl]		\
 	he:[he]		\
 	hu:[hu]		\
 	id:[id]		\

build/windows/installer/lang/meson.build

@@ -26,6 +26,7 @@ languages = [
   { 'code': 'eu',    },
   { 'code': 'fi',    },
   { 'code': 'fr',    },
+  { 'code': 'gl',    },
   { 'code': 'he',    },
   { 'code': 'hu',    },
   { 'code': 'id',    },