PSXCPU_LOG for dynarec64 (dumped only compile). Dump log only if PSXCPU_LOG defined and Config.PsxOut option is used. Minor code polishments.

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@85183 e17a0e51-4ae3-4d35-97c3-1a29b211df97