Mapped isValidMapfile to mapsforge implementation
Mapped isValidMapfile to mapsforge implementation

KublaikhanGeek/cgeo,kumy/cgeo,cgeo/cgeo,pstorch/cgeo,S-Bartfast/cgeo,marco-dev/c-geo-opensource,ThibaultR/cgeo,cgeo/cgeo,madankb/cgeo,mucek4/cgeo,cgeo/cgeo,matej116/cgeo,tobiasge/cgeo,S-Bartfast/cgeo,vishwakulkarni/cgeo,schwabe/cgeo,pstorch/cgeo,brok85/cgeo,ThibaultR/cgeo,cgeo/cgeo,vishwakulkarni/cgeo,superspindel/cgeo,lewurm/cgeo,vishwakulkarni/cgeo,yummy222/cgeo,brok85/cgeo,madankb/cgeo,SammysHP/cgeo,samueltardieu/cgeo,tobiasge/cgeo,tobiasge/cgeo,xiaoyanit/cgeo,auricgoldfinger/cgeo,marco-dev/c-geo-opensource,lewurm/cgeo,kumy/cgeo,rsudev/c-geo-opensource,mucek4/cgeo,Bananeweizen/cgeo,Huertix/cgeo,Huertix/cgeo,superspindel/cgeo,S-Bartfast/cgeo,Bananeweizen/cgeo,xiaoyanit/cgeo,rsudev/c-geo-opensource,pstorch/cgeo,ThibaultR/cgeo,mucek4/cgeo,schwabe/cgeo,Bananeweizen/cgeo,superspindel/cgeo,SammysHP/cgeo,yummy222/cgeo,KublaikhanGeek/cgeo,brok85/cgeo,matej116/cgeo,KublaikhanGeek/cgeo,schwabe/cgeo,xiaoyanit/cgeo,matej116/cgeo,auricgoldfinger/cgeo,madankb/cgeo,auricgoldfinger/cgeo,lewurm/cgeo,schwabe/cgeo,SammysHP/cgeo,samueltardieu/cgeo,Huertix/cgeo,marco-dev/c-geo-opensource,rsudev/c-geo-opensource,yummy222/cgeo,kumy/cgeo,samueltardieu/cgeo