resolve symlinks in local files

the tar libraries choke when checking valid
filenames because they don't resolve symlinks
Merge branch 'hotfix/1.0.2'
Merge pull request #245 from ptone/find-links-symlinks

resolve symlinks in local files
Merge branch 'release/1.1'
Merge branch 'release/1.2'
Merge branch 'release/1.2.1'
Merge branch '1.3.X'
Merge branch '1.3.X'
Fixed typo in some help messages
Merge pull request #955 from Zearin/master

Fixed typo in some help messages
deprecate `pip bundle` and support for installing pybundle files
pip-1.4rc4
have pip release branch test using virtualenv release branch
pip.index: fix crash getting Content-Type header

Returned headers may not always have the "Content-Type"
field available.  Avoid KeyError exceptions by using
dict.get() instead of blindly grabbing the header value.

Closes #32
fix for http://bugs.python.org/issue17980 in code backported from the python3 stdlib

Signed-off-by: Marcus Smith <qwcode@gmail.com>
1.4rc5
merge from release-1.4 branch
Remove link to old issue comment.  Issue #1064 has better description and solution.
Remove the changelog from the PyPI page and add links to it and the installation docs.

Also some minor stylistic changes.
Moved a recursive import.