libjpeg-turbo has never supported non-ANSI C compilers. Per the spec,
ANSI C compilers must have locale.h, stddef.h, stdlib.h, memset(),
memcpy(), unsigned char, and unsigned short. They must also handle
undefined structures.
+ document that tjFree() accepts NULL pointers without complaint.
Effectively, it has had that behavior all along, but the API does not
guarantee that tjFree() will be implemented with free() behind the
scenes, so it's best to formalize the behavior.
Including the license templates was confusing to some, since it made
it appear as if the copyright year and author were unspecified for the
libjpeg-turbo source. Thus, rather than include the zlib License
template, link to that template on opensource.org. For the Modified BSD
License, include a roll-up of copyright years and authors, since the
terms of that license require the text of it to be included in product
documentation for binary distributions without accompanying source code.
LICENSE.md is included in the binary distributions as well, so it
doesn't make much sense to refer to license headers in source files that
aren't necessarily going to be there.
The IJG README file has been renamed to README.ijg, in order to avoid
confusion (many people were assuming that that was our project's README
file and weren't reading README-turbo.txt) and to lay the groundwork for
markdown versions of the libjpeg-turbo README and build instructions.
DRC