SPI specific fixes for OSX compilation
Refactored action_ociolook to use ImageBufAlgo::ociolook instead of building a  ColorProcessor and passing it to ImageBufAlgo::colorconvert.
Update Tinyformat to the latest release
Scan for matching frames if no explicit framespec is provided.

Fixes #713.
SPI specific -- upgrade our locked Field3D version, now that bugs are fixed
IC/TS get_image_info add queries for "datawindow" and "displaywindow"
Sysutil::physical_memory
CHANGES update
Bump version
Make cleaner threads.h compile for the NOTHREADS case
__attribute__(visibility) only works for gcc newer than 4.1.2
Fix for old versions of msvc
Missing testsuite ref
Fixes for FreeBSD
ustring - avoid duplicate allocations for libc++ (as we do for gcc)
IC & TS: allow complete destruction of the shared ImageCache.

Previously, destroy() would fully delete a non-shared IC but in the
case of the global "shared" IC would just do a cursory invalidate of
the files.

This patch adds a parameter to the destroy() methods that, if true, will
do an even more thorough destruction of the underlying IC -- a full
invalidate_all(true) followed by releasing the shared pointer and (when
nobody else is still holding it) fully destroying the IC.
Also refactor ImageCache::invalidate_all to severely streamline when
force==true.

Default behavior doesn't change, but you can use this parameter to force
a full destruction of the underlying IC, even if it's the "shared" one,
for apps that want to be completely sure that they fully reclaim the
memory and all other resources held by the IC.
Clarify docs about oiiotool --fit:pad
Fix openexr-images directory path
Careful quoting of paths in cmake helps if filepaths have spaces.
Added support for OpenColorIO displays with the new --ociodisplay flag.

The new --ociodisplay flag applies color transforms from an OCIO
display/view combination. Optional keywords are "from" (source colorspace),
"looks" (optional looks overrides, supports empty string to disable looks),
and the same "key" and "value" keywords as --ociolook.