Make the namespacing used for --deb-changelog consistent with other
fields - fixes #543
deb-upstart: automatically symlink to upstart-job

When --deb-upstart is given, automatically create a symlink to
/var/lib/upstart-job for each given paramter.
Merge pull request #545 from igalic/upstart-symlink

deb-upstart: automatically symlink to upstart-job
- mkdir necessary directories
- style
- give a better error message if the user provides an invalid or
inaccessible path
- give a better error message if you specify a config file path that
doesn't exist.
symlinks... fucking symlinks.

get the symlink syntax right.
Merge pull request #546 from igalic/upstart-symlink

symlinks... fucking symlinks.
Merge pull request #544 from torrancew/fix_deb_changelog_path

Make the namespacing used for --deb-changelog consistent with other fields
- make stderr from child processes show up as 'info' level logs. This
will prevent future confusion. The truth is this: it's called "standard
error" but it often gets purely informational, and not error, output.
Should fix #550 and it will stop scaring users.
Merge branch 'master' of github.com:jordansissel/fpm
Add reference to README.md about Mac OS X packages

Seems silly to have such a useful feature and not advertise it!
Merge pull request #553 from fatlotus/patch-1

Add reference to README.md about Mac OS X packages