Port the project to meson

[aruiz]

In order to make the project a bit more maintainable, I have ported its build system to meson.

[masneyb]

Thanks @aruiz for the contribution.

There are lots of warnings that need to be cleaned up, and most are related to ununsed parameters. Most can be silenced with:

diff --git a/meson.build b/meson.build
index fa71f0de36fe..184e7d3720aa 100644
--- a/meson.build
+++ b/meson.build
@@ -18,6 +18,8 @@ project_version = meson.project_version()
 project_name = meson.project_name()
 
 add_project_arguments(f'-DPACKAGE_NAME="@project_name@"', language:'c')
+add_project_arguments('-Wno-unused-parameter', language:'c')
+add_project_arguments('-Wno-cpp', language:'c')
 
 cc = meson.get_compiler('c')
 pthread = cc.find_library('pthread', required: true)

I don't want to apply this to the project, however I did it in my branch just to see if there are other warnings that need to be addessed. I see a few that I'll push up a branch with some fixes.

[masneyb]

I updated the README to use meson with this commit: c4d8f09

I fixed some warnings with this commit: 7c256a3