Effective DisplayServer separation, rename X11 -> LinuxBSD

platform/linuxbsd/SCsub

@@ -0,0 +1,23 @@
+#!/usr/bin/env python
+
+Import('env')
+
+from platform_methods import run_in_subprocess
+import platform_linuxbsd_builders
+
+common_x11 = [
+    "crash_handler_linuxbsd.cpp",
+    "os_linuxbsd.cpp",
+    "joypad_linux.cpp",
+    "context_gl_x11.cpp",
+    "detect_prime_x11.cpp",
+    "display_server_x11.cpp",
+    "vulkan_context_x11.cpp",
+    "key_mapping_x11.cpp",
+
+]
+
+prog = env.add_program('#bin/godot', ['godot_linuxbsd.cpp'] + common_x11)
+
+if (env["debug_symbols"] == "full" or env["debug_symbols"] == "yes") and env["separate_debug_symbols"]:
+    env.AddPostAction(prog, run_in_subprocess(platform_linuxbsd_builders.make_debug_linuxbsd))