updated .gitignore for reorganized folders

.gitignore

@@ -22,13 +22,13 @@ src/macosx/M6502.ins
 *.dSYM
 .vscode/c_cpp_properties.json
 .vscode/settings.json
-src/windows/sdl/*
-src/windows/x64/*
-src/windows/Win32/*
-src/windows/Stella.vcxproj.user
-src/windows/*.bak
-src/libretro/x64/*
-src/libretro/Stella.vcxproj.user
+src/os/windows/sdl/*
+src/os/windows/x64/*
+src/os/windows/Win32/*
+src/os/windows/Stella.vcxproj.user
+src/os/windows/*.bak
+src/os/libretro/x64/*
+src/os/libretro/Stella.vcxproj.user
 .vs/*
 .tgitconfig
 src/**/*.psess
@@ -40,4 +40,4 @@ src/tools/fonts/*
 a.out
 *.json
 *.sqlite3
-*.bak
+*.bak