Implement CLI bin scripts for PEAR et. al.

[mikeschinkel]

For reference: https://stackoverflow.com/a/1385351/102699

From the PHP install on my Mac here are the CLI tools available; these are the "et.al.":

• pear
• peardev
• pecl
• phar -> phar.phar
• phar.phar
• php
• php-cgi
• php-config
• phpdbg
• phpize

We should ideally make all of them work, but at least pear, pecl, phar and php work for this 0.17.0.

@MickMake Looking at the php script in box-scripts I see that the php script is self-contained. I assume self-containment was a goal when you wrote it but looking forward and considering the nature of our project I think that we should be using an integrated approach instead. IOW, I think all scripts should be comprised of calling lower level box commands.

For example, the current check_image() function, which appears as a copy in at least five places in the source code is very hard to maintain. Better to create a box util check-image command and call it from the php script.

[mikeschinkel]

So this is biggest that first assumed. We need to discuss more.

Current thoughts are to create a global /opt/box/pear share and implement a pear type installable for a project to include in its stack so that even if a project uses code that is in the global share other people using the code from a repo in their projects would cause WPLib Box to autoinstall the Pear package into that box's global Pear share.

To find where Pear installs things run pear config-get php_dir