Re: [Mesa3d-dev] u_half.? -> u_format_half.? rename

[Luca B. <luc...@gm...>]

I named it that way because it is datatype conversion functionality,
which is conceptually a lower layer than format conversion, which
operates on multi-component formats, and is also totally independent
of the existing format conversion functionality.

It is the only member of that layer because all other currently needed
datatype conversions can be performed with trivial C language
expressions: this could change as other unusual floating point
datatypes are needed (e.g. 6e5 and 5e5 for EXT_packed_float).

That said, feel free to rename it: it's just a cosmetic issue.
Alternatively, maybe it a new data conversion prefix could be
invented, like "u_convert_half.*" or something like that.