Link to a wiki page from installer, if opcode cache isn't optimal
The issues of the opcode caches are sometimes very hard to understand. So we should provide a wiki page about this and link from install/report tool to show more informations and help.
A wiki page would be easy to update new informations, configuration issues or bugs inside the opcode caches. APC for example has many glitches.
[TASK] Add Link to wiki page for opcode cache
Add a link to http://wiki.typo3.org/Opcode_Cache in installers
system environment check messages.
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Jigal van Hemert
Tested-by: Jigal van Hemert