Bug fix: dahdi-cnet-linux 2.5.0 (FXS Dial Pulse Mappings)

I decided to switch out the Trimline on my desk in favor of my old Eletrisk Bureau Oslo phone tonight. Well, I found that the upheaval in the design of DAHDI between 2.4 and 2.5 resulted in my overlooking dial pulse mappings on FXS ports. I did get the FXO code in, but that's not helpful when you're trying to dial out! That is now fixed, and the fixed patch and tarball have been uploaded. If you don't use a Swedish, New Zealand, or Oslo rotary dial phone, you can ignore this.