Move dep.py to dep/__init__.py, for splitting into smaller files. (trunk r15461)

svn path=/main/branches/2.1.7/; revision=15670

diff --git a/pym/portage/dep.py b/pym/portage/dep/__init__.py
similarity index 100%
rename from pym/portage/dep.py
rename to pym/portage/dep/__init__.py