Now builds from a clean repo:
developer/src/build.sh configure build test publish
* Splits kmbrowserhost into kmdbrowserhost for Developer; this means
that Developer Browser Host now inherits the Developer settings rather
than the Keyman for Windows settings, and simplifies distribution and
management. The only difference between the two is in the startup code
so this seems like a good split.
* Cleanup of various build scripts and dependencies.
This is not enough for building to WASM, but wanted to split out the
bigger changes into their own PRs. This is mostly busy-work.
One serious bug fixed:
* u16string_from_string was not converting from UTF-16 correctly
Apart from that, just tidies up a few bits and pieces in kmcmplib:
* type coercion for json-validator.cpp (probably already fixed upstream)
* cleanup of build scripts for new builder variable names
* various compatibility macros for MSVC vs clang
* safer math expressions
* file name casing in headers
* replacement of various ms-only std funcs
* removed some unused variables and consts
* tightened up search for keyboards to get only keyboards in /source/
folders (may be possible to improve further in the future?)
