System Requirements Check before In-Portal Installation

We need to introduce new "System Requirements Check" step in In-Portal installation wizard.

Below are to scenarios:

[B]1. Clean/New Installation[/B]

This step will be located before "Filesystem Check" step and will NOT allow to continue if ANY of [B]required[/B] settings has not passed.

We need to show FAILED or PASSED to the right from the setting (see Security check step for example).

NOTES:

MySQL version: 5.0+ (required) - checked as part "Database Configuration" step
MySQL Packet Size: 1MB min (required) - checked as part "Database Configuration" step

Don't allow moving forward if any of thee 2 MySQL settings are incorrect/lower than minimum.

[B]2. Installation Maintenance[/B]

This step will be checking for System Requirements (see attached image).

After user selects that wants to check the System Requirement he will see a page with list of them and FAILED or PASSED to the right from it (see Security check step)

[B]Below is list of checks that will consist of "Server-side" and "Client-side" requirements subsections:[/B]

Server-side requirements
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PHP version: 5.2+ (required)

MySQL version: 5.0+ (required) - [B]NOTE:[/B] ONLY on Installation Maintenance step
MySQL Packet Size: 1MB min (required for large website, optional for small website) [B]NOTE:[/B] ONLY on Installation Maintenance step

URL Rewriting Support: yes/no (optional)
PHP extensions:

• Memcache (optional); Memcache class
• Curl (required); curl_init function
• Freetype (required); imagettfbbox function
• GD 1.8+ (required)
• jpeg (required)
• MySQL; mysql_connect function (required)
• JSON (optional); json_encode function
• Java (optional); run "java args" (need to determine args that cause error on incorrectly installed java)

PHP settings:

• ini_set('memory_limit', ...) - works/don't work (optional)
• ini_get('date.timezone') - timezone set/not set (required)
• ini_get('gpc_order') - contains "GPC" string
• ini_get('output_buffering') > 0 - buffering works (required)

Client-side requirements:
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Cookies enabled
JavaScript enabled