[9fans] acme question + diffs for kfs, fs and plumbing

[Fco.J.Ballesteros <nemo@plan9.escet.urjc.es>]

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Could we change the acme tag so that the file name is terminated by
`|' and not by space?  Otherwise I don't know how to let acme edit
files that have blanks on their names (It would eat part of the name).


Now the diffs. I had to make them to let my system handle
blanks on file names; i.e. to
	- let the plumber config know of blanks
	- permit blanks in kfs
	- permit blanks in fs
	- permit blanks in acme tags (I don't include this one).

/sys/lib/plumb/basic:
	- add space as a valid char for file names.
	  eg. '[ a-zA-Z¡-￿0-9_\-./]+' instead of '[ a-zA-Z¡-￿0-9_\-./]+'


Permit blanks in kfs servers:

diff /n/dump/2002/0708/sys/src/cmd/disk/kfs/sub.c sub.c
382c382
< 		if(c <= 040)
---
> 		if(c < 040)
diff /n/dump/2002/0708/sys/src/cmd/disk/kfs/9p2.c 9p2.c
795c795
< 		if((*p & 0xFF) <= 040)
---
> 		if((*p & 0xFF) < 040)

Permit blanks in real file servers:

diff ./port/9p2.c /sys/src/fs/port/9p2.c
155c155
< 		if((*p & 0xFF) <= 040)
---
> 		if((*p & 0xFF) < 040)
diff ./port/sub.c /sys/src/fs/port/sub.c
496c496
< 		if(c <= 040)
---
> 		if(c < 040)