Ok, I have found something that might explain the update stuff
reported in pre4. If you are updating foo.lyx _and_ have foo.tex also
in the same dir as foo.lyx the wrong foo.tex may get into the
dependency file.
_but_ I can _really_ not see how this can happen since we store
absolute paths in the dependency file.
Any way I am now rewriting some of the dependency handling/algorithms
to make sure that latex is run only the needed number of times, even
for the initial update. I am also bettering the debugging output a
bit.
Lgb
