Add nmap package

Add NcFTP (client) package

Add manpages

Add package for ScrollZ IRC client

This adds ScrollZ 2.3 as a package. There's currently no IRC client package available for Chromebrew, and while e.g. EPIC may be more popular, ScrollZ has been a favorite since the 90s. This latest version 2.3 has been released earlier this year. Tested successfully on a Samsung Series 3 (ARM) Chromebook.

This adds NcFTP client 3.2.6 as a package. This is useful, since we don't have any standard FTP console client on ChromeOS. If the user has ncurses or openssl libraries installed, then the client can be run via an ncurses or with encryption respectively, but this is optional and therefore not defined in the dependencies. Tested the package successfully on a Samsung Series 3 (ARM) Chromebook.

This adds nmap 7.31 as a package. I have tested the package on a Samsung Series 3 (ARM) machine and everything compiles successfully. The resulting binary works without issues. I did not add "openssl" as a dependency - this is on purpose. For a few corner cases, nmap can use some SSL functionality, but it works perfectly without. However, if the user has "openssl" installed at the time this package is being installed, then nmap will use this.

(UPDATE) JDK8 armv7l binary.

Fix libpng url

Fixes #233 

skip tests because at least one test wants to write to /

add unzip package

(UPDATE) README - Remove "Does not support arm chipsets yet" and replace with a table.

Added sha256 of arm ruby to install.sh script

(UPDATE) Nano to 2.7.1

(UPDATE/FIX) JDK8

(UPDATE) GO to 1.7.4

(UPDATE) HTOP to 2.0.2

(UPDATE) NGINX Change stopnginx to run "sudo nginx -s quit" instead of "sudo pkill nginx"

(FIX) Checksum Mismatch on PCRE

ARM support (tested on c100pa)

upstream code isn't maintained any more, many distros have unofficial
patch sets, so we use the full ubuntu patch set.  Includes several
security vulnerabilities

Make symbolic link between /usr/local/nginx/sbin/nginx and /usr/local/bin/nginx be forced otherwise it fails.