reorganize files

bake.cmd

@@ -6,7 +6,7 @@ windres -o utf8.obj utf8.rc
 ld -relocatable -o libwinsane.obj utf8.obj
 
 :: Compile chkstk
-nasm src\_win\chkstk.asm -ochkstk.o -fwin64
+nasm src\os_win\chkstk.asm -ochkstk.o -fwin64
 
 :: Compile the rest of the party
 clang -Wall src\ciabatta.c -o ciabatta.obj -c -DCIABATTA_WIN -I inc -I src\_win -nodefaultlibs -g -mfma

src/ciabatta.c

@@ -65,15 +65,15 @@
 
 // Windows stuff
 #if defined(CIABATTA_WIN)
-    #include "_win/win.h"
-    #include "_win/cookie.c"
-    #include "_win/assert.c"
-    #include "_win/cmdline.c"
-    #include "_win/entry.c"
-    #include "_win/environment.c"
-    #include "_win/heap.c"
-    #include "_win/signal.c"
-    #include "_win/stdio.c"
-    #include "_win/threads.c"
-    #include "_win/time.c"
+    #include "os_win/win.h"
+    #include "os_win/cookie.c"
+    #include "os_win/assert.c"
+    #include "os_win/cmdline.c"
+    #include "os_win/entry.c"
+    #include "os_win/environment.c"
+    #include "os_win/heap.c"
+    #include "os_win/signal.c"
+    #include "os_win/stdio.c"
+    #include "os_win/threads.c"
+    #include "os_win/time.c"
 #endif