[gdk-pixbuf] (24 commits) ...Merge branch 'clarify-pixels-bytes' into 'master'

[Emmanuele Bassi <ebassi src gnome org>]

Summary of changes:

  c60ffd5... GdkPixbuf: Formalize the difference between pixels/bytes st
  ce96225... gdk-pixdata.c: Use the pixel getter API
  5dd78ae... io-*.c: Use gdk_pixbuf_get_pixels(); don't access the pixel
  a90b4e5... Move the macros to convert the DPI/DPM density units to whe
  158b2a3... io-tga.c: Don't use gdk-pixbuf-private.h
  77d00a2... io-bmp.c: Don't use gdk-pixbuf-private.h
  5554a69... io-icns.c: Don't use gdk-pixbuf-private.h
  2bfa293... io-ani.c: Don't use gdk-pixbuf-private.h
  a4238ae... io-tiff.c: Don't use gdk-pixbuf-private.h
  8e50122... io-xbm.c: Don't use gdk-pixbuf-private.h
  ecdc776... io-png.c: Don't use gdk-pixbuf-private.h
  9c48ed7... io-gif-animation.c: Don't use gdk-pixbuf-private.h
  910826f... io-ani-animation.h: Don't use gdk-pixbuf-private.h
  87025bc... io-ani-animation.c: Don't use gdk-pixbuf-private.h
  7a577d7... io-xpm.c: Don't use gdk-pixbuf-private.h
  3f79e7e... io-ico.c: Don't use gdk-pixbuf-private.h
  17db002... io-qtif.c: Don't use gdk-pixbuf-private.h
  4b9e9a9... io-gif.c: Don't use gdk-pixbuf-private.h
  dbd120c... io-pnm.c: Don't use gdk-pixbuf-private.h
  fa1f09a... io-jpeg.c: Don't use gdk-pixbuf-private.h
  e9ec4c0... io-jasper.c: Don't use gdk-pixbuf-private.h
  818b717... README.md: notes on how to specify build options and run th
  c3ea9ef... Coding style fixups
  53633af... Merge branch 'clarify-pixels-bytes' into 'master'