libgee: upgrade 0.20.6 -> 0.20.8

Changelog:
==========
 * Fixes for new release process
 * Fixes for newer valac

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-devtools/libgee/libgee_0.20.6.bb → meta-oe/recipes-devtools/libgee/libgee_0.20.8.bb

@@ -20,7 +20,7 @@ do_configure:prepend() {
     done
 }
 
-SRC_URI[archive.sha256sum] = "1bf834f5e10d60cc6124d74ed3c1dd38da646787fbf7872220b8b4068e476d4d"
+SRC_URI[archive.sha256sum] = "189815ac143d89867193b0c52b7dc31f3aa108a15f04d6b5dca2b6adfad0b0ee"
 
 # http://errors.yoctoproject.org/Errors/Details/766884/
 # libgee-0.20.6/gee/concurrentlist.c:1169:177: error: passing argument 4 of 'gee_hazard_pointer_get_pointer' from incompatible pointer type [-Wincompatible-pointer-types]