Updates kvmx: 558828c Shell: try disown instead of nohup

diff --git a/kvmx b/kvmx
index 9d5c8b8cb92b6a6cd0b4f185b49cbad267e680ef..558828c4eba4688740ecc7476cf6ef73e2c1ae67 160000 (submodule)
--- a/kvmx
+++ b/kvmx
@@ -1 +1 @@
-Subproject commit 9d5c8b8cb92b6a6cd0b4f185b49cbad267e680ef
+Subproject commit 558828c4eba4688740ecc7476cf6ef73e2c1ae67