Overall code cleanup, updated info

- removed header comments in source files
- my1imgbmp updated to new head/info structure (NOT tested!)
- still need to update my1imgtest(dual image display?)
Updated with PNM file utility

- segfaults when viewing pnm image, bmp cannot load?
Found and fixed multiple bugs - basically formats

- my1imgtest job change... target command line application!
Multiple update(s) and bugfix(es)

- my1imgtest now becomes command-line utility!
  = can now write c-style data array of image
  = all basic filters usable
  = fixed all newly-found bugs
- added function to force grayscale mode (if masked @encoded-RGB)
- added initframe to my1imagefpo
- proper freeimage & freeframe (length now indicator)
- code cleanup
- updated README with PNM utility
- removed TODO