sb2-check-pkg-mappings: More user-friendly output
sb2-check-pkg-mappings: More user-friendly output

- sb2-check-pkg-mappings prints now only one character/checked
  package, when checking all packages. Option -v (verbose)
  enables old-style output (two lines/package)

- When checking named packages, option -v shows information about
  each file (this is what -v did in the past also when checking
  all packages)

loganchien/scratchbox2,loganchien/scratchbox2,ldbox/ldbox,loganchien/scratchbox2,ldbox/ldbox,madscientist42/scratchbox2,BinChengfei/scratchbox2,lbt/scratchbox2,loganchien/scratchbox2,OlegGirko/ldbox,madscientist42/scratchbox2,madscientist42/scratchbox2,OlegGirko/ldbox,BinChengfei/scratchbox2,h113331pp/scratchbox2,BinChengfei/scratchbox2,ldbox/ldbox,OlegGirko/ldbox,h113331pp/scratchbox2,OlegGirko/ldbox,OlegGirko/ldbox,h113331pp/scratchbox2,madscientist42/scratchbox2,lbt/scratchbox2,h113331pp/scratchbox2,OlegGirko/ldbox,lbt/scratchbox2,loganchien/scratchbox2,loganchien/scratchbox2,BinChengfei/scratchbox2,h113331pp/scratchbox2,BinChengfei/scratchbox2,ldbox/ldbox,madscientist42/scratchbox2,lbt/scratchbox2,lbt/scratchbox2,BinChengfei/scratchbox2,ldbox/ldbox,madscientist42/scratchbox2,h113331pp/scratchbox2,ldbox/ldbox