Changes since 5.6.12:
* Many of the -C and -W command line options have been removed since
they are not used in practice. The -Wall and -Call options continue
to work though; these are the only options mentioned in the pkgsrc
guide.
* When a PLIST file contains redundant libtool libraries (.la and the
corresponding .so), there is only a single warning per file.
* Warnings about the package COMMENT are now strictly ordered from left
to right.
* The hashes for all distfiles must now contain the SHA512 hash. This
hash has been added to many distfiles in 2015. It's time now to
enforce it on all other distfiles as well.
* Makefile fragments that are included inside an .elif exists(...)
are not reported as missing.
* The check for redundant variables and accidentally overwritten
variables has been improved. Now the warning occurs at the later
definition. This especially applies to cases where a file is included
and after that, some of its variables are overridden. Variables in
unrelated files are no longer marked as redundant.
* When a package contains multiple definitions of a single variable
(typical for Makefile.common), the later definition overrides the
earlier definition. That way, the location of DISTINFO_FILE and
PATCHDIR is resolved correctly.
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