pass along SRCWRTIMER_ROOT_DIR in .cargo/config.toml too (helps with cargo clippy)

Author: rtldg

.cargo/config.toml

@@ -12,6 +12,8 @@ target = "i686-pc-windows-msvc"
 CFLAGS_i686_pc_windows_msvc = "/Zi /FS"
 CXXFLAGS_i686_pc_windows_msvc = "/Zi /FS"
 
+SRCWRTIMER_ROOT_DIR = { value = "../srcwrtimer", relative = true }
+
 [target.i686-pc-windows-msvc]
 rustflags = [
 	# 2025... we can rely on CPUs to be using SSE2... not that it will likely change much in codegen...