Log Message:
ucon64: update to 2.2.2.

- added proper support for Clang to the makefiles (by dbjh)
  Indicate that you want to use Clang by setting the environment variable CC.
  Either at configuration time:
  $ CC=clang ./configure
  Or at build time:
  $ CC=clang make
- updated (SNES) implemented dumping for --xgd6. 15 years late, but still the
  only tool to do it :-) (by dbjh; thanks to Kristian Gunstone for making me
  try to explain why it could not be done ;-) )
- restored support for NetBSD/i386 and OpenBSD/i386 in makefile of libcd64 (by
  dbjh)
- updated FAQ with explanation about how to compile uCON64 on macOS with support
  for USB (by dbjh)
- fixed some issues in MinGW, MinGW-w64 and Visual C++ ports that made them
  choke on files larger than 2 GB. On 32-bit UNIX try adding
  -D_FILE_OFFSET_BITS=64 to CFLAGS to fix the issues (by dbjh; thanks to
  Mystic_Merlin for testing on Windows 98)
- updated (all) upgraded unzip to version 1.1 (by dbjh)
- updated (SNES) --gd3 writes correct SRAM mapping values for Trials of Mana
  (by dbjh; thanks to Mystic_Merlin for reporting the issue and testing)
- updated (SNES) --gd3 supports 64 Mbit HiROM games. It works at least for the
  English fan translation of Fire Emblem - Seisen no Keifu (J) (Project Naga,
  beta version 7) (by dbjh)
- updated (SNES) --gd3 supports up to 64 Mbit LoROM games. It works at least for
  the 48 Mbit English fan translation of Fire Emblem - Thraki 776 (J) (V.ROM)
  (Lil' Manster 1.07) (by dbjh)
- updated (all) --hfind and --hfindr accept search strings without spaces (by
  dbjh; thanks to eadmaster for the feedback)
- renamed (all) --dual to --bit (by dbjh)
- updated (all) --hex, --bit, --code and --print accept an optional end offset
  (by dbjh)
- added (all) --hreplace=S:R find S and copy R to the start of each match
  (wildcard: '?') (by dbjh; thanks to eadmaster for the suggestion)