[bp/r44991] Synchronise tiki-check with trunk as it's a stand-alone script and relevant to Tiki 9, 10 and 11+ - comprising:
      [bp/r42877][FIX] Time limits of 0 also mean unlimited in php.ini, [KIL] Duplicate code
      [bp/r42878][ENH] More comprehensible check for how errors are reported by PHP, [ENH] More reliable check for ini_set
      [bp/r44896][MOD] Just a little design in this world of gross
      [bp/r44967][FIX] check: Add test for GD Freetype support (required for CAPTCHA image generation)
      [bp/r44990][FIX] check: Test for existence of GD functions before calling as they don't exist if the extension isn't there (thanks marclaporte)