add recipe for org-link-travis
Minor typo correction
Merge pull request #1683 from aki2o/org-link-travis

add recipe for org-link-travis
Merge pull request #1684 from yuvallanger/patch-1

Minor typo correction
Merge pull request #1659 from npostavs/compilation

Fix compilation
handle Emacs 24.4 package.el

Packages now have a list of package descriptors
package-desc-doc has been renamed to package-desc-summary
check all available package descs for new version

The available packages in package-archive-contents are not guaranteed to
be sorted by version.
fix compilation warnings from Emacs 23

some functions were changed or introduced in 24.3
merge use-current pkg-dir package-24.4