> Mentioned on grid, but this has 2 issues for me:
> First, it looks like the patch somehow had a space
> appended to each line; needed a:
> 
> 	,s/ $//g
> 
> in order to apply.
> 
> Second, smtp fails to build after a 'mk nuke'; it
> looks like we somehow fail to rebuild a y.tab.h.
> Weirdly, 'mk clean' fixes it for me.
> 
> Also, noting the sed hacks in the mkfile to get
> two parsers: our yacc should grow a '%prefix'
> 

Let's do this again.


Description:
upas: mkfile cleanup (thanks Amavect)

Changeset 8035 broke the libcommon rule in mkupas.
Deleting the 'mk clean' in the recipe fixes this.

Fixed smtp's build after mk nuke.
smtp/mkfile overrode the nuke rule,
but it forgot to delete rfc822.tab.c
smtp/y.tab.h would not get rebuilt because
it was not specified as a dependency.
Added the -s flag to rename y.tab.h to rfc822.tab.h
requiring all includes to be changed.
This allows rfc822.tab.h to be specified without conflict
with the y.tab.h rule from </sys/src/cmd/mkmany

Cleanup includes deleting UPDATE vars from all mkfiles,
deletion of extra vars used for UPDATE,
reorganization of vars in TARG,LIB,OFILE,HFILE order,
and small style changes for consistency.


Thanks,
Amavect