[Nemiver-list] source directories setting support

["Dodji Seketeli" <dodji domain hid>]

Hello,

I have just commited a changeset allowing the user to set an arbitrary
source directories list.
That dir list is used by nemiver to know where to find source files
refered to by the target program being debugged. That can be very
usefull when the full path to the sources is not present in the
debugging info.

The user can now launch gconf-editor and edit the key
"/apps/nemiver/dbgperspective/source-search-dir" to set the list of
directories separated by a colon (':'). By default, that list is set
to the current working directory, '.' . Okay, now we need a GUI to set
preferences in nemiver :-) .

I have also updated the database schema used to store debugging session info,
so you will need to rm -rf ~/.nemiver so that the debugger can
recreate the database with the new schema, otherwise you will face
some db access errors.

This changeset adds a dependancy on libgconf-2. I have written a thin
dynmod (implementing the IConfMgr interface) to abstract the use of
gconf so that a sqlite3 implementation could be easily provided, if
needed.

echo "Cheers"
mv dodji /dev/bed