Add cron package

Add readline dependency to gdbm

Building gdm failed because of missing readline

Add sysstat package

Add missing readline dependency

Update valgrind from 3.12.0 -> 3.13.0

Update gdb from 7.31.0 to 8.0

Add termcap package

Add diskscan package

Add ctorrent package

This is a general maintenance and bugfix release.

This is a general maintenance and bugfix release.

- add missing readline dependency
- alphabetize dependency list
- add missing homepage url

Update nmap from 7.31 to 7.50

Update curl from 7.54.0 to 7.54.1

This is a security and general bugfix release. CVE-2017-9502 is
addressed.

This updates nmap from 7.31 to 7.50. The 7.50 release contains mostly
improvements to the signature database and nse scripts.

Update wine package from 2.8 to 2.10

Add dropbox package

Fix crew command to include hidden files in the archive

Add mywanip package

Add composer package

Update php7 from 7.1.5 to 7.1.6

Refactor search logic to support regex

Usage is like below.

```
$ crew search vi
(i) vim: Vim is a highly configurable text editor built to make creating and changing any kind of text very efficient.
(i) vidstab: Transcode video stabilization plugin.
vifm: Vifm is an ncurses based file manager with vi like keybindings/modes/options/commands/configuration, which also borrows some useful ideas from mutt.
(i) libxvid: The free video codec that is strong in compression and quality.
neovim: Neovim is a refactor, and sometimes redactor, in the tradition of Vim (which itself derives from Stevie).
$ crew search vi extra
(i) vim: Vim is a highly configurable text editor built to make creating and changing any kind of text very efficient.
http://www.vim.org/
version 8.0-1
(i) vidstab: Transcode video stabilization plugin.
http://public.hronopik.de/vid.stab/
version 0.98b
vifm: Vifm is an ncurses based file manager with vi like keybindings/modes/options/commands/configuration, which also borrows some useful ideas from mutt.
https://vifm.info/
version 0.8.2
(i) libxvid: The free video codec that is strong in compression and quality.
https://www.xvid.com/
version 1.3.4
neovim: Neovim is a refactor, and sometimes redactor, in the tradition of Vim (which itself derives from Stevie).
https://neovim.io/
version 0.1.7
$ crew search ^vim$ extra
(i) vim: Vim is a highly configurable text editor built to make creating and changing any kind of text very efficient.
http://www.vim.org/
version 8.0-1
```

`crew search` use to only return a single result if your query string
matched a package name exactly.

`crew search` now supports regex.

chronos@localhost / $ crew search ^lib
Found libpcap, version 1.8.1
Found libjpeg, version 9.1
Found libunwind, version 1.1
Found libxslt, version 1.1.28
Found libffi, version 3.0.13-1
Found libssh2, version 1.4.3
Found libtool, version 2.4.6
Found libpipeline, version 1.4.1
Found libevent, version 2.0.22
Found libxml2, version 2.9.2
Found libgd, version 2.0.33
Found libtiff, version 4.0.7
Found libpng, version 1.6.26
Found libsigsegv, version 2.10

  - Simplify architecture logic