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, 142 deletions

diff --git a/3rdparty/glfw/source/tests/allocator.c b/3rdparty/glfw/source/tests/allocator.c
deleted file mode 100644
index 3fb004d..0000000
--- a/3rdparty/glfw/source/tests/allocator.c
+++ /dev/null
@@ -1,142 +0,0 @@
-//========================================================================
-// Custom heap allocator test
-// 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>
-#include <assert.h>
-
-#define CALL(x) (function_name = #x, x)
-static const char* function_name = NULL;
-
-struct allocator_stats
-{
-    size_t total;
-    size_t current;
-    size_t maximum;
-};
-
-static void error_callback(int error, const char* description)
-{
-    fprintf(stderr, "Error: %s\n", description);
-}
-
-static void* allocate(size_t size, void* user)
-{
-    struct allocator_stats* stats = user;
-    assert(size > 0);
-
-    stats->total += size;
-    stats->current += size;
-    if (stats->current > stats->maximum)
-        stats->maximum = stats->current;
-
-    printf("%s: allocate %zu bytes (current %zu maximum %zu total %zu)\n",
-           function_name, size, stats->current, stats->maximum, stats->total);
-
-    size_t* real_block = malloc(size + sizeof(size_t));
-    assert(real_block != NULL);
-    *real_block = size;
-    return real_block + 1;
-}
-
-static void deallocate(void* block, void* user)
-{
-    struct allocator_stats* stats = user;
-    assert(block != NULL);
-
-    size_t* real_block = (size_t*) block - 1;
-    stats->current -= *real_block;
-
-    printf("%s: deallocate %zu bytes (current %zu maximum %zu total %zu)\n",
-           function_name, *real_block, stats->current, stats->maximum, stats->total);
-
-    free(real_block);
-}
-
-static void* reallocate(void* block, size_t size, void* user)
-{
-    struct allocator_stats* stats = user;
-    assert(block != NULL);
-    assert(size > 0);
-
-    size_t* real_block = (size_t*) block - 1;
-    stats->total += size;
-    stats->current += size - *real_block;
-    if (stats->current > stats->maximum)
-        stats->maximum = stats->current;
-
-    printf("%s: reallocate %zu bytes to %zu bytes (current %zu maximum %zu total %zu)\n",
-           function_name, *real_block, size, stats->current, stats->maximum, stats->total);
-
-    real_block = realloc(real_block, size + sizeof(size_t));
-    assert(real_block != NULL);
-    *real_block = size;
-    return real_block + 1;
-}
-
-int main(void)
-{
-    struct allocator_stats stats = {0};
-    const GLFWallocator allocator =
-    {
-        .allocate = allocate,
-        .deallocate = deallocate,
-        .reallocate = reallocate,
-        .user = &stats
-    };
-
-    glfwSetErrorCallback(error_callback);
-    glfwInitAllocator(&allocator);
-
-    if (!CALL(glfwInit)())
-        exit(EXIT_FAILURE);
-
-    GLFWwindow* window = CALL(glfwCreateWindow)(400, 400, "Custom allocator test", NULL, NULL);
-    if (!window)
-    {
-        glfwTerminate();
-        exit(EXIT_FAILURE);
-    }
-
-    CALL(glfwMakeContextCurrent)(window);
-    gladLoadGL(glfwGetProcAddress);
-    CALL(glfwSwapInterval)(1);
-
-    while (!CALL(glfwWindowShouldClose)(window))
-    {
-        glClear(GL_COLOR_BUFFER_BIT);
-        CALL(glfwSwapBuffers)(window);
-        CALL(glfwWaitEvents)();
-    }
-
-    CALL(glfwTerminate)();
-    exit(EXIT_SUCCESS);
-}
-