libspng 0.7.4

ChangeLog: https://github.com/randy408/libspng/releases/tag/v0.7.4

ChangeLog:	https://github.com/randy408/libspng/releases/tag/v0.7.3
MFH:		2022Q4 (bugfixes)

Commit b7f05445c00f has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.

This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.

Approved by:		portmgr (tcberner)

It has been common practice to have one or more URLs at the end of the
ports' pkg-descr files, one per line and prefixed with "WWW:". These
URLs should point at a project website or other relevant resources.

Access to these URLs required processing of the pkg-descr files, and
they have often become stale over time. If more than one such URL was
present in a pkg-descr file, only the first one was tarnsfered into
the port INDEX, but for many ports only the last line did contain the
port specific URL to further information.

There have been several proposals to make a project URL available as
a macro in the ports' Makefiles, over time.

This commit implements such a proposal and moves one of the WWW: entries
of each pkg-descr file into the respective port's Makefile. A heuristic
attempts to identify the most relevant URL in case there is more than
one WWW: entry in some pkg-descr file. URLs that are not moved into the
Makefile are prefixed with "See also:" instead of "WWW:" in the pkg-descr
files in order to preserve them.

There are 1256 ports that had no WWW: entries in pkg-descr files. These
ports will not be touched in this commit.

The portlint port has been adjusted to expect a WWW entry in each port
Makefile, and to flag any remaining "WWW:" lines in pkg-descr files as
deprecated.

Approved by:		portmgr (tcberner)

ChangeLog: https://github.com/randy408/libspng/releases/tag/v0.7.2

Fixes

    * Re-enabled ARM NEON optimizations for indexed color images
    * Fixed encoder options set with spng_set_option() not being respected in
      some cases
    * Fixed spng_get_png_buffer() not setting an error code in some cases
    * Fixed encoder heap overflow with specially crafted images (#196)
    * Fixed 4GB progressive decode/encode limitation on 32-bit (#198)
    * Updated error string for SPNG_EBUFSIZ

New

    * Decoder now exposes an estimate of image compression level through
      SPNG_IMG_COMPRESSION_LEVEL, see Decode options
    * Added documentation for all decode and encode options, added notes on
      encoder configuration

Other

    * Added encode fuzzer to ensure robustness of code;
    * Fuzzer will run on PR's and continuously on OSS-Fuzz alongside the decode
      fuzzer
    * Updated example code

Reported by:	portscout
MFH:	2022q1 (multiple bug fixes)

Reported by:	portscout

ChangeLog: https://github.com/randy408/libspng/releases/tag/v0.7.0

Reported by:	portscout

ChangeLog: https://github.com/randy408/libspng/releases/tag/v0.6.3

Reported by:	portscout

Reported by:	portscout

Changes:	https://github.com/randy408/libspng/releases/tag/v0.6.1

Changes:	https://github.com/randy408/libspng/releases/tag/v0.6.0

Libspng is a C library for reading and writing Portable Network
Graphics (PNG) format files with a focus on security and ease of
use.

The goal is to provide a fast PNG library with a simpler API than
libpng.

WWW: https://libspng.org/