Modernizing framework linking.
Preventing “update.sh” from running with a dirty working directory.
Improving update.sh.
Keeping “version.c” after running update.sh. 
Injecting correct VERSION as well.
Cleaning unnecessary duplication of COMBINE_HIDPI_IMAGES.
Adding target for markdown CLI tool.
Removing GCC_WARN_64_TO_32_BIT_CONVERSION for discount code.
Fixing indentation settings for discount code.