This saves a few dozen bytes in wrpc-sw builds.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This commit factorizes some code in lib/conf.c from the two hosted
startup files, but the aim is passing "-f <filename>" on the command
line, to test with unconventional setups without touching the "real"
filesystem.

Now ppsi looks for the configuration file is from threee places, in
this order:
    - command line, if any
    - architecture-specific, if any (e.g. "/wr/etc/ppsi.conf")
    - compile-time default ("/etc/ppsi.conf")

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This changes all "Name Surname for CERN" to "Copyright CERN, author
Name Surname".  This is trivial and makes no change, with a few
expections:

- all trivial Makefiles that had "for CERN" lines have now no
attributions, as they are trivial anyways.

- a few unrepresented files have not the copyright notice (especially
ptpdump, that I wrote in 2012).

- a few "for CERN" remain in subprojects, where I didn't touch anyrhing

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

The parser is implemented in lib/conf.c and has no libc dependencies.
It is currently used by arch-gnu-linux, whose main function is here modified
accordingly.
This commit has not been tested yet, here is pushed temporarly to show how
work is going on.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

pp_parse_conf will receive the txt data read from conf file and will compile
the ppg->links structs. File open is supposed to be done outside the proper
parser here defined, so that any architecture, even those with no filesystems,
can make use of the parser, supposing the configuration txt data is saved
elsewhere (e.g. in a E2PROM)

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>