fix dependencies so that compressed usage gets rebuilt if
a) include/usage.h is changed, and 
    b) after "make clean".
			
			
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							@@ -436,13 +436,16 @@ endif
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ifeq ($(strip $(CONFIG_FEATURE_COMPRESS_USAGE)),y)
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USAGE_BIN:=scripts/usage
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$(USAGE_BIN): $(top_srcdir)/scripts/usage.c .config
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$(USAGE_BIN): $(top_srcdir)/scripts/usage.c .config \
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		$(top_srcdir)/include/usage.h
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	$(do_link.h)
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DEP_INCLUDES += include/usage_compressed.h
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include/usage_compressed.h: .config $(USAGE_BIN) $(top_srcdir)/scripts/usage_compressed
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	$(Q)SED="$(SED)" $(SHELL) $(top_srcdir)/scripts/usage_compressed "$(top_builddir)/scripts" > $@
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include/usage_compressed.h: .config $(USAGE_BIN) \
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		$(top_srcdir)/scripts/usage_compressed
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	$(Q)SED="$(SED)" $(SHELL) $(top_srcdir)/scripts/usage_compressed \
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	"$(top_builddir)/scripts" > $@
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endif # CONFIG_FEATURE_COMPRESS_USAGE
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# workaround alleged bug in make-3.80, make-3.81
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@@ -470,7 +473,8 @@ clean:
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	    docs/BusyBox.txt docs/BusyBox.1 docs/BusyBox.html \
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	    docs/busybox.net/BusyBox.html busybox.links \
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	    libbusybox.so* \
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	    .config.old busybox busybox_unstripped
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	    .config.old busybox busybox_unstripped \
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	    include/usage_compressed.h scripts/usage
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	- rm -r -f _install testsuite/links
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	- find . -name .\*.flags -o -name \*.o  -o -name \*.om -o -name \*.syn \
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	    -o -name \*.os -o -name \*.osm -o -name \*.a | xargs rm -f
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