Copy changes from the no-history fork, generated back in 2023

Original commit message:
> commit f138311d2d2e0cc9ba0496d523bb46f2c1c9fb73
> Author: rtk0c <[email protected]>
> Date:   Wed Sep 20 23:58:58 2023 -0700
>
>     Copy from the PlasticSCM repo, replace vendored glm wtih conan

In reality, this also introduced a few uncommitted changes in the
original PlasticSCM repo. See the modified and new files in this patch.

1 files changed, 0 insertions, 110 deletions

diff --git a/3rdparty/glfw/source/examples/windows.c b/3rdparty/glfw/source/examples/windows.c
deleted file mode 100644
index 598e521..0000000
--- a/3rdparty/glfw/source/examples/windows.c
+++ /dev/null
@@ -1,110 +0,0 @@
-//========================================================================
-// Simple multi-window example
-// Copyright (c) Camilla Löwy <[email protected]>
-//
-// This software is provided 'as-is', without any express or implied
-// warranty. In no event will the authors be held liable for any damages
-// arising from the use of this software.
-//
-// Permission is granted to anyone to use this software for any purpose,
-// including commercial applications, and to alter it and redistribute it
-// freely, subject to the following restrictions:
-//
-// 1. The origin of this software must not be misrepresented; you must not
-//    claim that you wrote the original software. If you use this software
-//    in a product, an acknowledgment in the product documentation would
-//    be appreciated but is not required.
-//
-// 2. Altered source versions must be plainly marked as such, and must not
-//    be misrepresented as being the original software.
-//
-// 3. This notice may not be removed or altered from any source
-//    distribution.
-//
-//========================================================================
-
-#define GLAD_GL_IMPLEMENTATION
-#include <glad/gl.h>
-#define GLFW_INCLUDE_NONE
-#include <GLFW/glfw3.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(int argc, char** argv)
-{
-    int xpos, ypos, height;
-    const char* description;
-    GLFWwindow* windows[4];
-
-    if (!glfwInit())
-    {
-        glfwGetError(&description);
-        printf("Error: %s\n", description);
-        exit(EXIT_FAILURE);
-    }
-
-    glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
-    glfwWindowHint(GLFW_DECORATED, GLFW_FALSE);
-
-    glfwGetMonitorWorkarea(glfwGetPrimaryMonitor(), &xpos, &ypos, NULL, &height);
-
-    for (int i = 0;  i < 4;  i++)
-    {
-        const int size = height / 5;
-        const struct
-        {
-            float r, g, b;
-        } colors[] =
-        {
-            { 0.95f, 0.32f, 0.11f },
-            { 0.50f, 0.80f, 0.16f },
-            {   0.f, 0.68f, 0.94f },
-            { 0.98f, 0.74f, 0.04f }
-        };
-
-        if (i > 0)
-            glfwWindowHint(GLFW_FOCUS_ON_SHOW, GLFW_FALSE);
-
-        windows[i] = glfwCreateWindow(size, size, "Multi-Window Example", NULL, NULL);
-        if (!windows[i])
-        {
-            glfwGetError(&description);
-            printf("Error: %s\n", description);
-            glfwTerminate();
-            exit(EXIT_FAILURE);
-        }
-
-        glfwSetWindowPos(windows[i],
-                         xpos + size * (1 + (i & 1)),
-                         ypos + size * (1 + (i >> 1)));
-        glfwSetInputMode(windows[i], GLFW_STICKY_KEYS, GLFW_TRUE);
-
-        glfwMakeContextCurrent(windows[i]);
-        gladLoadGL(glfwGetProcAddress);
-        glClearColor(colors[i].r, colors[i].g, colors[i].b, 1.f);
-    }
-
-    for (int i = 0;  i < 4;  i++)
-        glfwShowWindow(windows[i]);
-
-    for (;;)
-    {
-        for (int i = 0;  i < 4;  i++)
-        {
-            glfwMakeContextCurrent(windows[i]);
-            glClear(GL_COLOR_BUFFER_BIT);
-            glfwSwapBuffers(windows[i]);
-
-            if (glfwWindowShouldClose(windows[i]) ||
-                glfwGetKey(windows[i], GLFW_KEY_ESCAPE))
-            {
-                glfwTerminate();
-                exit(EXIT_SUCCESS);
-            }
-        }
-
-        glfwWaitEvents();
-    }
-}
-