Clearn imconv support out of cmake control bits.
De-document imconv in README.
unifdef IMCONV.
Merge trunk.
Remove imconv bits from the manpage.  While I'm here, mention JPEG
stuff somewhere it isn't currently.
Few more imconv bits in the manpage.
This spec file is pretty out of date anyway, but might as well yank
the imconv bits here too.
Document deorbitting IMCONV.
Speculative and dirty excision of imconv references from these
VMS-related files.
Few more droppings here.
Use snprintf() instead of sprintf() here to ensure we don't wander off
the end and clobber random memory.

There are lots of these still around the codebase...
Retire IMCONV/libim support.

Upstream has been dead since last millennium, and while the code is
still out there, it would take significant work to even build on any
current platform, so this is pretty much all dead.
By adding a dummy if() at the top of this chain of conditionals, we
easily turn all the #ifdef'd conditionals into 'else if's, rather than
doing crazy dances with "else #endif #if if" constructs.  This will
let us pull back the crazy indents it grows into.
Rerun 'make indent' after that transform, to pull all these lines out
to less craziness.
Adjust how a conditional chain is built, so it doesn't split 'else /
if' across ifdefs, and doesn't build up increasingly deep indentation.