Update .gitignore
Update .gitignore

Added files created by PacMan backup operations.
MustafaCan/SMF2.1,elkarte/Elkarte,georaldc/SMF2.1,wizardaf/Elkarte,emanuele45/Dialogo,Spuds/Elkarte,wizardaf/Elkarte,mkress/SMF2.1,Spuds/Elkarte,mkress/SMF2.1,Spuds/Elkarte,georaldc/SMF2.1,elkarte/Elkarte,elkarte/Elkarte,interlab/Elkarte,margarett/SMF2.1,interlab/Elkarte,nwsw/Elkarte,StealthWombat/How-to-fork-an-Elk,mkress/SMF2.1,nwsw/Elkarte,wizardaf/Elkarte,joshuaadickerson/Elkarte2,margarett/SMF2.1,interlab/Elkarte,StealthWombat/How-to-fork-an-Elk,Ant59/Elkarte,StealthWombat/SMF2.1-more-forkery,wizardaf/Elkarte,StealthWombat/How-to-fork-an-Elk,MustafaCan/SMF2.1,StealthWombat/SMF2.1-more-forkery,Ant59/Elkarte,joshuaadickerson/Elkarte2,Ant59/Elkarte,joshuaadickerson/Elkarte2,joshuaadickerson/Elkarte2,emanuele45/Dialogo,StealthWombat/How-to-fork-an-Elk,nwsw/Elkarte,emanuele45/Dialogo