META_MODE: Don't hide the .depend rm -f command.

Otherwise the build command changes every build.  META_MODE will
only remove it if something changes to warrant rebuilding
the file.

Sponsored by:	EMC / Isilon Storage Division

share/mk/bsd.dep.mk

@@ -238,7 +238,7 @@ DPSRCS+= ${SRCS}
 # beforedepend/_EXTRADEPEND/afterdepend.  The target is kept
 # to allow 'make depend' to generate files.
 ${DEPENDFILE}: ${DPSRCS}
-.if exists(${.OBJDIR}/${DEPENDFILE})
+.if !empty(.MAKE.MODE:Mmeta) || exists(${.OBJDIR}/${DEPENDFILE})
 	rm -f ${DEPENDFILE}
 .endif
 .if target(_EXTRADEPEND)