graphics/lcms2: Update to 2.14

Upstream NEWS, less bugfixes, minor improvements, and things about Windows:

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2.14 Featured release
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lcms2 now implements ICC specification 4.4
New multi-threaded plug-in
Remove check on DLL when CMS_NO_REGISTER_KEYWORD is used

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2.13.1 Hot fix
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Fix for pure white going gray in grayscale transforms.

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2.13 Featured release
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Added support for premultiplied alpha
tifficc can now handle alpha channels, both unassociated and premultiplied
CGATS parser can now deal with very long strings
Added thread safe code to get time
Added automatic linear space detection
Added cmsGetStageContextID function
Added cmsDetectRGBProfileGamma function
configure now accepts --without-fastfloat to turn plugin off
Checked to work on STM32 Cortex-A, Cortex-M families

(gdt)