Update conversion script

- drop line wrapping (leaves lines long, but at least doesn't corrup
  indentation)
- repair cross links by replacing them to the relative path of the new
  name
- further extend new name calculation
- add input path argument

ecs/umn/process.py

@@ -1 +0,0 @@
-../../process.py

process_links.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+
+import json
+import argparse
+import subprocess
+
+
+def main():
+    parser = argparse.ArgumentParser(description='Process links.')
+    parser.add_argument(
+            'path', type=str, help='path to the files')
+    args = parser.parse_args()
+    matrix = json.loads(open("matrix.json").read())
+    for k, v in matrix.items():
+        replace = v.replace('/', '\/')
+        subprocess.run(
+            f"find {args.path} -name *'.rst' -type f -print0 | xargs"
+            f" -0 sed -i '' 's/{k}/{replace}/g'",
+            shell=True
+        )
+        print(k, v)
+
+
+if __name__ == "__main__":
+    main()