Assorted code cleanups

Merged Alan Coopersmith requested to merge alanc/fonttosfnt:cleanup into master
  • Variable scope reductions as recommended by cppcheck
  • args_copy variable is unused if HAVE_DECL_VA_COPY is not defined
  • makeBitmap: declare raster parameter const as recommended by cppcheck
  • Remove unused function findIndex
  • Allow inlining makeName
  • Use C99 compound literals to initialize newly allocated structs

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