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/
```

1 files changed, 5 insertions, 5 deletions

diff --git a/mesonbuild/cmake/executor.py b/mesonbuild/cmake/executor.py
index c22c0ca..7958baf 100644
--- a/mesonbuild/cmake/executor.py
+++ b/mesonbuild/cmake/executor.py
@@ -39,9 +39,9 @@ if T.TYPE_CHECKING:
 class CMakeExecutor:
     # The class's copy of the CMake path. Avoids having to search for it
     # multiple times in the same Meson invocation.
-    class_cmakebin = PerMachine(None, None)   # type: PerMachine[T.Optional[ExternalProgram]]
-    class_cmakevers = PerMachine(None, None)  # type: PerMachine[T.Optional[str]]
-    class_cmake_cache = {}  # type: T.Dict[T.Any, TYPE_result]
+    class_cmakebin: PerMachine[T.Optional[ExternalProgram]] = PerMachine(None, None)
+    class_cmakevers: PerMachine[T.Optional[str]] = PerMachine(None, None)
+    class_cmake_cache: T.Dict[T.Any, TYPE_result] = {}
 
     def __init__(self, environment: 'Environment', version: str, for_machine: MachineChoice, silent: bool = False):
         self.min_version = version
@@ -50,8 +50,8 @@ class CMakeExecutor:
         self.cmakebin, self.cmakevers = self.find_cmake_binary(self.environment, silent=silent)
         self.always_capture_stderr = True
         self.print_cmout = False
-        self.prefix_paths = []      # type: T.List[str]
-        self.extra_cmake_args = []  # type: T.List[str]
+        self.prefix_paths: T.List[str] = []
+        self.extra_cmake_args: T.List[str] = []
 
         if self.cmakebin is None:
             return