This PR ensures that the genHash will be the same
whether the cl_cache is re-used or just created.
So it has to be regenerated after compilation
to make sure it's created with non NULL irBinary.
It also allows to cache debugDataBinary.
Minor: Rename NEO_PERSISTENT_CACHE -> NEO_CACHE_PERSISTENT in FAQ,
since this version is used in code.
Related-To: NEO-8288, NEO-8092
Signed-off-by: Fabian Zwolinski <fabian.zwolinski@intel.com>