Check for MCrypt in SysInfo

[andrepereiradasilva]

Pull Request for Issue #9507.

Summary of Changes

Adds php mcrypt extension information to sysinfo.

Testing Instructions

1. Use Joomla 3.5.0
2. Aply patch
3. Go to sysinfo and check if in php settings separator there is a new line "MCrypt Enabled"

Additional information

PR for adding this info to the installer: #9508

[brianteeman]

This should be Mcrypt not MC

[mbabker]

Aside from the language string comment, looks fine to me.

[brianteeman]

Thanks for correcting the string

[brianteeman]

I have tested this item ✅ successfully on 5982059

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[brianteeman]

Taking @mbabker comment as a successful test setting to RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/9532.}