ThreadScope does not build

The attempt to build was made on Ubuntu 21.10 using stack and the current state of ThreadScope master branch. commit d70f45eb1d6a5dab13d4ea338d58d91389b77bd4

```
cairo > configure
cairo > [1 of 2] Compiling Main ( /tmp/stack-a013ee6ff927ebc3/cairo-0.13.8.1/Setup.hs, /tmp/stack-a013ee6ff927ebc3/cairo-0.13.8.1/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/setup/Main.o )
cairo > [2 of 2] Compiling StackSetupShim ( /home/pfp/.stack/setup-exe-src/setup-shim-mPHDZzAJ.hs, /tmp/stack-a013ee6ff927ebc3/cairo-0.13.8.1/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/setup/StackSetupShim.o )
cairo > Linking /tmp/stack-a013ee6ff927ebc3/cairo-0.13.8.1/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/setup/setup ...
cairo > Configuring cairo-0.13.8.1...
cairo > build
glib > configure
cairo > Preprocessing library for cairo-0.13.8.1..
cairo > setup: Error in C header file.
cairo >
cairo > cairo-gtk2hs.i:1: (column 1) [FATAL]
cairo > >>> Lexical error!
cairo > The character '#' does not fit here.
cairo >
glib > [1 of 2] Compiling Main ( /tmp/stack-a013ee6ff927ebc3/glib-0.13.8.1/Setup.hs, /tmp/stack-a013ee6ff927ebc3/glib-0.13.8.1/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/setup/Main.o )
glib > [2 of 2] Compiling StackSetupShim ( /home/pfp/.stack/setup-exe-src/setup-shim-mPHDZzAJ.hs, /tmp/stack-a013ee6ff927ebc3/glib-0.13.8.1/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/setup/StackSetupShim.o )
glib > Linking /tmp/stack-a013ee6ff927ebc3/glib-0.13.8.1/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/setup/setup ...
glib > Configuring glib-0.13.8.1...
glib > build
glib > Preprocessing library for glib-0.13.8.1..
glib > setup: Error in C header file.
glib >
glib > glib-object.i:1: (column 1) [FATAL]
glib > >>> Lexical error!
glib > The character '#' does not fit here.
glib >
Progress 2/6

-- While building package glib-0.13.8.1 (scroll up to its section to see the error) using:
/tmp/stack-a013ee6ff927ebc3/glib-0.13.8.1/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/setup/setup --builddir=.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0 build --ghc-options " -fdiagnostics-color=always"
Process exited with code: ExitFailure 1

-- While building package cairo-0.13.8.1 (scroll up to its section to see the error) using:
/tmp/stack-a013ee6ff927ebc3/cairo-0.13.8.1/.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0/setup/setup --builddir=.stack-work/dist/x86_64-linux-tinfo6/Cabal-3.0.1.0 build --ghc-options " -fdiagnostics-color=always"
Process exited with code: ExitFailure 1
```

Ubuntu 21.10 上で、コミット d70f45eb1d6a5dab13d4ea338d58d91389b77bd4 に対して Stack でビルドを再現します。まず cairo と glib の前処理の失敗、特に cairo-gtk2hs.i と glib-object.i で報告されている C ヘッダーの字句エラーを調査します。ThreadScope の master ブランチがこれらのエラーなしで正常にビルドできれば完了です。

索引モデルが issue の本文から書いたものです。