Build a WinXP compatible version of Spice (#611)

This was a lot more background work than expected, but that is the
nature of unnecessary hobbies I guess. Most things in here are obvious,
so here's the non-obvious thoughts and notes:

1. All the XP stuff is optional, if the toolchain isn't available it
won't even try
2. The docker build is the "known good" build and now has all the
required tools for XP and checking binaries
a. If you're OK with it, can add the XP_MUST_BUILD flag to
build_docker.sh
4. New `SPICE_XP` flag to comment out blocks
5. We could technically build using the Docker image I've made for my XP
compatible LLVM toolchain, but combining the binaries into a single zip
at the end of it is somewhat tedious, so I've chosen to grab the
binaries from my release
6. I also wrote a DLL checker to make sure the final binaries are
_actually_ XP compatible, which found some issues on x86_64 (I don't
know a single game that runs on 64 bit XP, but it wasn't too much effort
so whatever). This also won't run if missing, just to save the trouble.
7. The build script is still pretty shit, I've made some minor
improvements
  a. `/usr/bin/env bash` instead of `/bin/bash` as it's more correct
  b. Adding `-it` to the docker build, so Ctrl+C actually halts it
c. Main issue is that failures don't halt, because of the custom error
catching function. This has caused a lot of frustration, maybe we can
change that

## Testing
It runs on 32 and 64 bit installs of XP. My jubeat cab is on Win10 these
days and I haven't got around to testing an actual game, but I've
distributed test builds of this to people who *have* confirmed it works
as expected.

src/spice2x/hooks/graphics/graphics.cpp

@@ -1,3 +1,6 @@
+// GetDisplayConfigBufferSizes etc is Vista+
+#define _WIN32_WINNT 0x0601
+
 #include <initguid.h>
 
 #include "graphics.h"
@@ -232,9 +235,9 @@ static LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM l
             // This allows touches received on subscreen window to be translated correctly.
             update_spicetouch_window_dimensions(hWnd);
             // log_misc(
-            //     "graphics", "detected window change ({}x{} @ {}, {}), updating touch coord-space to match", 
+            //     "graphics", "detected window change ({}x{} @ {}, {}), updating touch coord-space to match",
             //     SPICETOUCH_TOUCH_WIDTH, SPICETOUCH_TOUCH_HEIGHT, SPICETOUCH_TOUCH_X, SPICETOUCH_TOUCH_Y);
-                
+
             // Update SPICETOUCH window if present
             if (SPICETOUCH_TOUCH_HWND) {
                 SetWindowPos(
@@ -371,7 +374,7 @@ static HWND WINAPI CreateWindowExA_hook(DWORD dwExStyle, LPCSTR lpClassName, LPC
     if (is_tdj_sub_window) {
         // TDJ windowed mode: remember the subscreen window handle for later
         TDJ_SUBSCREEN_WINDOW = result;
-    
+
         // hook for preventing the closing of subscreen window
         if (GRAPHICS_IIDX_WSUB) {
             graphics_hook_subscreen_window(TDJ_SUBSCREEN_WINDOW);
@@ -530,7 +533,7 @@ static BOOL WINAPI MoveWindow_hook(HWND hWnd, int X, int Y, int nWidth, int nHei
        if (GRAPHICS_IIDX_WSUB) {
            // (Experimental) Show subscreen in windowed mode
             graphics_load_windowed_subscreen_parameters();
- 
+
             RECT rect {};
             DWORD dwStyle;
 
@@ -1085,7 +1088,7 @@ static std::string get_dmdo_string(DWORD dmdo) {
 }
 
 void change_primary_monitor(const std::string &monitor_name) {
-    log_misc("graphics", "try changing primary monitor to {}...", monitor_name);    
+    log_misc("graphics", "try changing primary monitor to {}...", monitor_name);
 
     // for WinXP, since these are Vista+ or 7+ APIs
     const auto user32 = LoadLibraryA("user32.dll");
@@ -1116,7 +1119,7 @@ void change_primary_monitor(const std::string &monitor_name) {
     std::vector<DISPLAYCONFIG_PATH_INFO> paths;
     std::vector<DISPLAYCONFIG_MODE_INFO> modes;
     bool succeeded = false;
-    
+
     // in a retry loop, try to query for display config
     // retry loop is needed because it can fail with ERROR_INSUFFICIENT_BUFFER
     for (int attempt = 0; attempt < 5; ++attempt) {
@@ -1323,4 +1326,4 @@ void update_monitor_on_boot(std::optional<graphics_orientation> target_orientati
 
     // sleep for a little bit after changing monitor settings to delay game launch
     Sleep(1000);
-}
+}