The setting magic_quotes_runtime is removed in PHP5.4.0 (see: https:/…

[diegocaprioli]

The setting magic_quotes_runtime is removed in PHP5.4.0 (see: https://www.php.net/manual/en/info.configuration.php#ini.magic-quotes-runtime) so the function call is unneeded. Added backwards compatibility by wrapping the calls in an if statement checking phpversion using version_compare.

Also, this fixes an error we were having with :get_magic_quotes_runtime()":

Function get_magic_quotes_runtime() is deprecated in PHP 7+

This function is in the /rguedes/pdfmerger package in this file: /Classes/fpdf/fpdf.php, line 1043