Don't install named rc script with bind-tools.

Sponsored by:	Absolight
Use iconv port, for wchar_t.

When running the plexhometheater player, the following line is repeatedly
printed into the log output.

ERROR: convert_checked iconv_open() failed from UTF-8 to WCHAR_T, errno=22(Invalid argument)

This is because the plexhometheater port currently uses the iconv in base,
which does not provide the wchar_t functionality.

PR:		194533
Submitted by:	Ben Woods (maintainer)
 - Add GELI passphrase passthrough support to default grub.cfg
 - Add detection for EFI mode at boot
 - Don't clobber ${PREFIX}/etc/grub.d/40_custom on re-install
 - Bump PORTREV
- Fix support for BHYVE on head/amd64.

  Modifying OPTIONS_DEFAULT after including bsd.port.option.mk is not valid.
  Just check for existence of bhyve for now instead to determine default.

PR:		194531
Reported by:	Conrad Meyer
Remove duplicate master sites.

All the removed entries are aliases for mirrorservice.org.

Approved by:	maintainer
Use ftp.mirrorservice.org instead of ftp.uk.i-scream.org.

% host ftp.uk.i-scream.org
ftp.uk.i-scream.org is an alias for ftp.mirrorservice.org.