2013-10-05 22:55 UTC+0200 Viktor Szakáts (vszakats users.noreply.github.com)
  * config/global.mk
  * utils/hbmk2/hbmk2.prg
    + added MSVS 2013 version detection

  * README.md
    + added MSVS 2013 instructions

  * src/3rd/png/png.dif
  * src/3rd/png/pnglconf.h
    * disabled PNG_CONSOLE_IO_SUPPORTED build option.
      (MSVS 2013 doesn't support 'stderr' constant)