Enable exceptions in ragel subproject, and revert the exceptions part of:
commit 22cbd038d3
Author: Khaled Hosny <khaled@aliftype.com>
Date: Tue Sep 14 12:34:25 2021 +0200
[meson] Add ragel subproject
To get ride of the following warnings:
cl : Command line warning D9025 : overriding '/EHs' with '/EHs-'
If ragel 6.10 is not found, build it from source.
Seems to work, except that ragel uses exceptions and we configure
HarfBuzz build to not use exceptions, and I can’t find away to enable
exceptions only for the ragel subproject. I had to remove cpp_eh=none
from default options and try to disable exceptions in MSVC manually
(other compilers are already handled).