gEDA: PINSEQ attribute

[sdb-at-NOSPAMcloud9_dot_net (Stuart Brorson)]

Greetings --

I've been hacking the SPICE netlister, and found a little buglet in
gsymcheck.  I was having a problem where gnetlist:get-nets returned
"ERROR_INVALID_PIN" for a particular symbol.  Upon investigation, it
turned out that the symbol's PINSEQ attributes did not start at 1, and
they had a gap in the numbering sequence too. 

I ran gsymcheck on the symbol, and it passed.  This is an oversight in
the functionality of gsymcheck -- apparently it doesn't check the
PINSEQ attributes for validity.  If there is interest, I can try to
look into this further, but I figured that it was better to bring this
buglet to the attention of the project leaders before I ran off trying
to fix gsymcheck. 

Stuart