Test compilation

First thing is getting sch-rnd compiled and running:

- sch-rnd code is fast changing/growing in this inital stage: always svn 
up, even if you did already today; for now always ./configure before make 
(we don't yet have the warning mechanism we use in pcb-rnd that tells you 
when you need to re-run ./configure); if you report an error, always 
include sch-rnd svn rev number you used for testing

- you will need librnd 3.1.x installed; best if you install librnd svn 
trunk, but last stable release or even distro -dev package could work too 
(Debian sid tends to have latest version hours after the release, Debian 
testing has latest a 2..3 weeks after release).

- in sch-rnd we have the usual INSTALL doc telling the usual things; 
sch-rnd is very similar to pcb-rnd: we have scconfig 

- for now always ./configure with --debug; I expect to see a lot of 
crashes and we'd need to debug a lot

- we do not have make install yet, please always run from source; please 
always cd to trunk/src/sch-rnd/ and run ./sch-rnd; running from anywhere 
else is not yet supported

- simply running ./sch-rnd should pop up the default empty sheet with an 
empty titlebox on the bottom-left corner; grid is on by default; zooming, 
panning around, playing with the grid should work

- please test if the default board is rendered with all GUIs accessible to 
your librnd

- please do not report compiler warnings, I see them too; at this early 
stage I am not going to deal with the non-fatal ones (I will clean them up 
once the basic infra is up and running)

- if sch-rnd fails to compile or fails to run or fails to render, please 
report the bug; as usual in any ./configure related problem I'll need to 
see your full scconfig/config.log