package/gauche: bump to version 0.9.12

- Update site to get latest release
- Update hash of COPYING (update in year with
  https://github.com/shirok/Gauche/commit/09a3d4f9da52d8b3d9bc28a0ff2aa9c02e99190a
  https://github.com/shirok/Gauche/commit/2a4146798cdaceaf43764e1bf7b959b4a31bf995)

https://github.com/shirok/Gauche/blob/release0_9_12/ChangeLog
https://practical-scheme.net/gauche/gmemo/index.cgi?Release%200.9.12

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/gauche/gauche.hash

@@ -1,6 +1,6 @@
-# From https://sourceforge.net/projects/gauche/files/Gauche/
-sha1  ad5e15021764b733ec913cca8b77c9a53d4ee997  Gauche-0.9.9.tgz
-md5  20d8ed835ae0bc97cceed78a71f9857b  Gauche-0.9.9.tgz
+# Locally calculated after checking signature
+# https://github.com/shirok/Gauche/releases/download/release0_9_12/Gauche-0.9.12.tgz.asc
+sha256  b4ae64921b07a96661695ebd5aac0dec813d1a68e546a61609113d7843f5b617  Gauche-0.9.12.tgz
+
 # Locally calculated
-sha256  4ca9325322a7efadb9680d156eb7b53521321c9ca4955c4cbe738bc2e1d7f7fb  Gauche-0.9.9.tgz
-sha256  13cb582677dbcdc5b34313c59b4a014e74ef2f5fd80e514a0bd98fd8a4e45bed  COPYING
+sha256  bc09c643a05e14d7ea8264aa737c5c14d60a20911a0309e7b27da231bbb4525d  COPYING

package/gauche/gauche.mk

@@ -4,9 +4,9 @@
 #
 ################################################################################
 
-GAUCHE_VERSION = 0.9.9
+GAUCHE_VERSION = 0.9.12
 GAUCHE_SOURCE = Gauche-$(GAUCHE_VERSION).tgz
-GAUCHE_SITE = http://downloads.sourceforge.net/project/gauche/Gauche
+GAUCHE_SITE = https://github.com/shirok/Gauche/releases/download/release$(subst .,_,$(GAUCHE_VERSION))
 GAUCHE_LICENSE = BSD-3-Clause, Boehm-gc, SRFI (srfi-11.scm), reload (reload.scm)
 GAUCHE_LICENSE_FILES = COPYING
 GAUCHE_DEPENDENCIES = host-gauche