All the fiddly business where you have to check that a thing exists,
make sure of its type, find its size, allocate some memory, and then
read it again properly (or, alternatively, loop round dealing with
ERROR_MORE_DATA) just doesn't belong at every call site. It's crying
out to be moved out into some separate utility functions that present
a more ergonomic API, so that the code that decides _which_ Registry
entries to read and what to do with them can concentrate on that.
So I've written a fresh set of registry API wrappers in windows/utils,
and simplified windows/storage.c as a result. The jump-list handling
code in particular is almost legible now!
Correcting a source file name in the docs just now reminded me that
I've seen a lot of outdated source file names elsewhere in the code,
due to all the reorganisation since we moved to cmake. Here's a giant
pass of trying to make them all accurate again.
This gets rid of all those annoying 'win', 'ux' and 'gtk' prefixes
which made filenames annoying to type and to tab-complete. Also, as
with my other recent renaming sprees, I've taken the opportunity to
expand and clarify some of the names so that they're not such cryptic
abbreviations.
