Log message:
converters/libiconv: disable GNU_CONFIGURE_STRICT check

The check would report many unknown options. This is only because
libiconv has several configure scripts, and in the end, all given options
are necessary.

Log message:
Explicitly override iconv checks on SunOS, as GNU libiconv will change its
own signature based on whether it finds itself already installed somewhere,
which then breaks software (e.g. QT) which assumes its native signature.

Restricted to SunOS for now as that's where it has been tested with positive
results, but likely will be useful everywhere.

Bump PKGREVISION.

Log message:
GC options.mk, not used since the last update years ago. Add SHA512
checksum.

Log message:
Remove pkgviews: don't set PKG_INSTALLATION_TYPES in Makefiles.

Log message:
Ensure 'cd dir && make' rules are executed in a sub-shell, allowing us to
remove MAKE_JOBS_SAFE=no.  We can't depend on gmake due to circular
dependencies.

Log message:
Fix previous for OS X 10.9 with clang (and maybe other non-glibc systems).

Log message:
Fix build on Linux with glibc>=2.16, for example, Fedora 22.

Log message:
Reset maintainer for resigned developers.

Log message:
Use find-headers instead of find-files to detect builtin header files.

Log message:
Drop superfluous PKG_DESTDIR_SUPPORT, "user-destdir" is default these days.