treewide: automatic rewriting of all comment-style type annotations

Performed using https://github.com/ilevkivskyi/com2ann

This has no actual effect on the codebase as type checkers (still)
support both and negligible effect on runtime performance since
__future__ annotations ameliorates that. Technically, the bytecode would
be bigger for non function-local annotations, of which we have many
either way.

So if it doesn't really matter, why do a large-scale refactor? Simple:
because people keep wanting to, but it's getting nickle-and-dimed. If
we're going to do this we might as well do it consistently in one shot,
using tooling that guarantees repeatability and correctness.

Repeat with:

```
com2ann mesonbuild/
```

2 files changed, 4 insertions, 4 deletions

diff --git a/mesonbuild/scripts/cmake_run_ctgt.py b/mesonbuild/scripts/cmake_run_ctgt.py
index 755530a68..df3f36185 100755
--- a/mesonbuild/scripts/cmake_run_ctgt.py
+++ b/mesonbuild/scripts/cmake_run_ctgt.py
@@ -9,7 +9,7 @@ from pathlib import Path
 import typing as T
 
 def run(argsv: T.List[str]) -> int:
-    commands = [[]]  # type: T.List[T.List[str]]
+    commands: T.List[T.List[str]] = [[]]
     SEPARATOR = ';;;'
 
     # Generate CMD parameters
diff --git a/mesonbuild/scripts/depfixer.py b/mesonbuild/scripts/depfixer.py
index b9c58fee5..593efd9f7 100644
--- a/mesonbuild/scripts/depfixer.py
+++ b/mesonbuild/scripts/depfixer.py
@@ -123,8 +123,8 @@ class Elf(DataSizes):
     def __init__(self, bfile: str, verbose: bool = True) -> None:
         self.bfile = bfile
         self.verbose = verbose
-        self.sections = []  # type: T.List[SectionHeader]
-        self.dynamic = []   # type: T.List[DynamicEntry]
+        self.sections: T.List[SectionHeader] = []
+        self.dynamic: T.List[DynamicEntry] = []
         self.open_bf(bfile)
         try:
             (self.ptrsize, self.is_le) = self.detect_elf_type()
@@ -329,7 +329,7 @@ class Elf(DataSizes):
         old_rpath = self.read_str()
         # Some rpath entries may come from multiple sources.
         # Only add each one once.
-        new_rpaths = OrderedSet()  # type: OrderedSet[bytes]
+        new_rpaths: OrderedSet[bytes] = OrderedSet()
         if new_rpath:
             new_rpaths.update(new_rpath.split(b':'))
         if old_rpath: