Add pre-built binaries for commacd, heroku and r

New prog sshuttle

Add most package

Added icu4c as a dependency for R package (#1629)

Update heroku.rb

Add commacd package

Add php package

Update unzip package to fix patch issue and compress man pages

Update openssl from 1.0.2l-1 to 1.0.2n

Add abcde package

Add scron package

Update ffmpeg from 3.3.3-1 to 3.4.1

Add pre-built binaries for siege, snooze, tpp and vim

Add whiptail package

Update binary versions in install.sh

Add libmicrohttpd package

sshuttle is a full-featured VPN over an SSH tunnel

Add pre-built binaries for ffmpeg

Add tpp package

Add siege package

Add pre-built binaries for duplicity, inxi, jam, npth and q

Add snooze package

`snooze` is a new tool for waiting until a particular time and then
running a command.  Together with a service supervision system such as
runit, this can be used to replace cron(8).

`snooze` has been tested on Linux 4.2.
It will likely work on other Unix-like systems with C99.

Over cron:
- mnemonic syntax
- no overlapping job runs possible
- filtering by ISO week and day of year
- due to supervision, no centralized daemon required
- due to supervision, can easily disable jobs or force their
  execution instantly
- due to supervision, have custom logs
- due to no centralized daemon, no fuzzing with multiple users/permissions
- very robust with respect to external time changes
- can use a file timestamp to ensure minimum waiting time between two
  runs, even across reboots
- randomized delays (some cron have that)
- variable slack (no need for anacron)
- ad-hoc usage possible, just run the program from command line

Over runwhen:
- less confusing usage (I hope)
- filtering by ISO week and day of year
- zero dependencies

Over uschedule:
- due to supervision, no centralized daemon required
- filtering by ISO week and day of year

npth: fix library path on configure