Don't copy build scripts for kernel build 'make exports'

Makefile.win

@@ -39,12 +39,19 @@ TOPDIR := ${shell echo %CD%}
 -include $(TOPDIR)\Make.defs
 
 # Control build verbosity
+#
+#  V=1,2: Enable echo of commands
+#  V=2:   Enable bug/verbose options in tools and scripts
 
 ifeq ($(V),1)
 export Q :=
 else
+ifeq ($(V),2)
+export Q :=
+else
 export Q := @
 endif
+endif
 
 # This define is passed as EXTRADEFINES for kernel-mode builds.  It is also passed
 # during PASS1 (but not PASS2) context and depend targets.
@@ -154,6 +161,10 @@ MKEXPORT_ARGS = -u
 endif
 endif
 
+ifeq ($(V),2)
+MKEXPORT_ARGS += -d
+endif
+
 # This is the name of the final target (relative to the top level directorty)
 
 BIN = nuttx$(EXEEXT)