Update winimerge and freeimage

diff --git a/Externals/freeimage b/Externals/freeimage
index 170d49c..fbc617c 160000 (submodule)
--- a/Externals/freeimage
+++ b/Externals/freeimage
@@ -1 +1 @@
-Subproject commit 170d49c65b3ec2eacd56840ca7566a07368b65fb
+Subproject commit fbc617c1390425fdf39d152fd6e6411f30bd3163

diff --git a/Externals/winimerge b/Externals/winimerge
index 4bb7537..b159e10 160000 (submodule)
--- a/Externals/winimerge
+++ b/Externals/winimerge
@@ -1 +1 @@
-Subproject commit 4bb7537d1e0e29656b17c42e31048abac71cb89f
+Subproject commit b159e10504ffc9f4d15ae41f11d058cbb01f734f