cb_printf()
* Moved `rz_analysis_var_list_show()` under rz_core as static function * Removed `cb_printf()` from RzAnalysis and refactoring zignatures * Removed newline from matches * Use `stdout` for ESIL traps * Converted commands to use RzCmdStateOutput
* Swap = & - R (#615)&(#616) * Fix R replace =