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
Merge tag '1.4'

Awesome release with wheel support and more.

# gpg: Signature made Tue Jul 23 22:52:29 2013 CEST using DSA key ID 0171DF30
# gpg: Good signature from "Jannis Leidel <jannis@leidel.info>"
# gpg:                 aka "Jannis Leidel (Gmail) <leidel@gmail.com>"
# gpg:                 aka "Jannis Leidel (Work key) <jannis@enn.io>"
# gpg:                 aka "Jannis Leidel <jezdez@mozilla.com>"
# gpg:                 aka "[jpeg image of size 138757]"
Merge branch 'master' of github.com:pypa/pip
Don't ignore already installed pre-releases
Test the new branch name
Test the new branch name
Merge pull request #1076 from dstufft/backport-65342ef

[Backport] Don't ignore already installed pre-releases
Test against the master virtualenv
Test against the 1.10.X release
function in case of broken sysconfig. fix #1074
changing global build dir name; see https://github.com/pypa/pip/issues/1078#issuecomment-21469936