Replacing submodule with subtree

Makefile

@@ -11,8 +11,4 @@ salmonella:
 	salmonella --keep-repo --repo-dir=./petri-dish; \
 	salmonella-html-report ./salmonella.log report
 
-tomlc99/toml.c:
-	git clone https://github.com/cktan/tomlc99.git
-	cd tomlc99; git checkout e4107c455491925b8982c22df1ce37c0ccb7d4e4
-
 # end

init-tomlc99.sh

@@ -1,3 +0,0 @@
-#!/usr/bin/env sh
-
-make tomlc99/toml.c

toml.egg

@@ -8,10 +8,7 @@
  (test-dependencies srfi-64 srfi-152)
 
  (components
-  (generated-source-file tomlc99/toml.c
-        (custom-build "init-tomlc99.sh"))
   (c-object tomlc99/toml
-            (source-dependencies tomlc99/toml.c)
             (source "tomlc99/toml.c"))
   (extension toml
              (objects tomlc99/toml)