Document 'distclean-stage[N]'
Refer to 'Makefile.tpl':
# Rules to wipe a stage and all the following ones, also used for cleanstrap
[+ IF prev +]distclean-stage[+prev+]:: distclean-stage[+id+] [+ ENDIF prev +]
.PHONY: distclean-stage[+id+]
distclean-stage[+id+]::
@: $(MAKE); $(stage)
@test "`cat stage_last`" != stage[+id+] || rm -f stage_last
rm -rf stage[+id+]-* [+
IF compare-target +][+compare-target+] [+ ENDIF compare-target +]
gcc/
* doc/makefile.texi (Makefile Targets): Document
'distclean-stage[N]'.