mksh: changed to build on cross stage if requested

shells/mksh/mksh.desc

@@ -2,7 +2,7 @@
 [COPY] This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 [COPY]
 [COPY] Filename: package/.../mksh/mksh.desc
-[COPY] Copyright (C) 2011 The OpenSDE Project
+[COPY] Copyright (C) 2011 - 2013 The OpenSDE Project
 [COPY]
 [COPY] More information can be found in the files COPYING and README.
 [COPY]
@@ -28,6 +28,6 @@
 [L] BSD
 [S] Stable
 [V] R40c
-[P] X -----5---9 106.600
+[P] X -?---5---9 106.600
 
 [D] 1337853141 mksh-R40c.cpio.gz https://www.mirbsd.org/MirOS/dist/mir/mksh/