[PLearn-developers] More conversions to PPath and PStream

[Olivier D. <del...@ir...>]

I modified the functions in fileutils to use PPaths and PStreams, and
tweaked a few more files and classes. The important points:

1) Maybe I broke a few things, feel free to fix them

2) Some files may now require to include <plearn/io/fileutils.h> to
compile

3) The setExperimentDirectory method in PLearner and HyperCommand has
changed, and YOU MUST FIX IT in your own subclasses if you don't want to
have surprises later (NB: I took care of the code in PLearn and
LisaPLearn):
<   virtual void setExperimentDirectory(const string& the_expdir);
---
>   virtual void setExperimentDirectory(const PPath& the_expdir);


--
Olivier

PS: Ah, I know I broke the AsciiVMatrix class too, sorry 'bout that. The
MultiInstanceVMatrix may also be affected (I did not test it yet).