Fix missing space after 'WHERE' when generating string from sql_statement_t.
Add some comments to help code readability.
Add jstr_format function to the external API.
Add some debug logs.
Use jstring in intel-x86-ref.
Add affected_flags to instruction_t objects.
Use sqlite3_exec in x86_ref_get_instruction_by_mnemonic instead
of using sqlite3_prepare, step and finalize to make the code
more generic, reusable and robust.