BUGFIX: don't try autocleanup inside system dirs

This safety feature addresses #2650 somewhat indirectly.
A list of system directories is defined.  When the uninstall
process encounters a "system directory" it does not touch that
directory at all
- no chmod on that dir
- no search for broken symlinks in that dir
- no cleanup of .DS_Store files in that dir
Explictly listed files from a pkg receipts are not affected by
this change.  Individual files will still be removed, even if
those files are in a special "system directory"
accept multiple arguments to uninstall/:pkgutil

We may as well do so, the previous behavior was a bug:
multiple elements were silently concatenated into a single
regexp.
demote FAQ.md to doc directory

This doc currently has very little content.  Also fix link
text for other content in the doc directory.
rename seafile.rb

to seafile-client.rb
per naming rules in CONTRIBUTING.md
rename strongvpn.rb

to strongvpn-client.rb
per naming rules in CONTRIBUTING.md
Merge pull request #3331 from rolandwalker/rename_strongvpn

rename strongvpn.rb
Merge pull request #3330 from rolandwalker/rename_seafile

rename seafile.rb
Upgrade Xiami.app to v1.1.6-1747
Merge pull request #3342 from kols/xiami

Upgrade Xiami.app to v1.1.6-1747
update authoxy to use :pkgutil uninstall

could not duplicate permissions issues mentioned in #3325.
add uninstall stanza for aquaterm
add uninstall stanza for chronoagent
add uninstall stanza for chronosync
Merge pull request #2672 from rolandwalker/lsb_no_delete_safety

BUGFIX: don't try autocleanup inside system dirs
added ltspice 4.0
Update SHA256 value for p4merge.
Create rpp.rb
Added MoviePly

MoviePly makes it easy to find and sort your movies, however big your
library:

Drag and drop files or folders to add movies
Clear and simple movie poster display
Cast lists and movie descriptions help you decide what to watch
Detects file type, codec and other relevant meta-data
Eliminates the need to maintain organised directories
Added LaunchRocket

A Mac PreferencePane for managing services with launchd/launchctl.
LaunchRocket was primarily created for managing various services
installed by Homebrew, though it should work with most
launchd-compatible plists.
Added Dewdrop

Enabling effortless file sharing on hardware you control.