COMP: Encode the pygccxml __version__

We do not have package metadata to pull from in the vendored version.

Author: thewtex

Modules/ThirdParty/pygccxml/src/UpdatepygccxmlFromUpstream.sh

@@ -28,8 +28,8 @@ upstream_sha="aa8661e4efa276f0af034d858e0be1cd1db4af20"
 # EDIT THIS SCRIPT to change the hash tag at which to begin the
 # next update...
 #
-# This merge was done on: July 27th, 2020
-git branch pygccxml-upstream f8322d75a190d6d393336ffd5e0d8bd23bbc83e5
+# This merge was done on: August 23rd, 2023
+git branch pygccxml-upstream 6637e8709b7779d19cd6089d3c25b193fd794b7c
 
 #
 # Make a temp directory to handle the import of the upstream source
@@ -96,5 +96,9 @@ echo to get the commit hash from which the pygccxml-upstream
 echo branch must be started on the next update.
 echo "---------------------------------"
 echo edit the line \"git branch pygccxml-upstream\" above.
-echo Once you have commited this change to the UpdatepygccxmlFromUpstream.sh script,
+echo "---------------------------------"
+echo Also update the __version__ in pygccxml/__init__.py
+echo "---------------------------------"
+echo Once you have commited this change to the
+echo UpdatepygccxmlFromUpstream.sh script and __init__.py,
 echo use \"git review-push\" to push this new update branch back to GitHub.

Modules/ThirdParty/pygccxml/src/pygccxml/__init__.py

@@ -51,4 +51,6 @@
 else:
     from importlib import metadata
 
-__version__ = metadata.version("pygccxml")
+# Begin ITK edit
+__version__ = "2.4.0"
+# __version__ = metadata.version("pygccxml")