Revert "5.x merge 4.x and submodules update"

.gitmodules

@@ -1,15 +1,12 @@
 [submodule "opencv"]
 	path = opencv
 	url = https://github.com/opencv/opencv.git
-	branch = 5.x
 [submodule "opencv_contrib"]
 	path = opencv_contrib
 	url = https://github.com/opencv/opencv_contrib.git
-	branch = 5.x
 [submodule "multibuild"]
 	path = multibuild
 	url = https://github.com/multi-build/multibuild.git
 [submodule "opencv_extra"]
 	path = opencv_extra
 	url = https://github.com/opencv/opencv_extra.git
-	branch = 5.x

find_version.py

@@ -65,7 +65,7 @@
     else:
         # local version identifier, not to be published on PyPI
         version = git_hash
-        opencv_version += ".{}".format(version)
+        opencv_version += "+{}".format(version)
 
     with open("cv2/version.py", "w") as f:
         f.write('opencv_version = "{}"\n'.format(opencv_version))

pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
 requires = [
-  "cmake>=3.13",
+  "cmake>=3.1",
   "numpy==1.13.3; python_version=='3.6' and platform_machine != 'aarch64' and platform_machine != 'arm64'",
   "numpy==1.17.0; python_version=='3.7' and platform_machine != 'aarch64' and platform_machine != 'arm64'",
   "numpy==1.17.5; python_version=='3.8' and platform_machine != 'aarch64' and platform_machine != 'arm64'",

setup.py

@@ -140,7 +140,7 @@ def main():
         [ r"python/cv2/py.typed" ] if sys.version_info >= (3, 6) else []
         ,
         "cv2.data": [  # OPENCV_OTHER_INSTALL_PATH
-            ("etc" if os.name == "nt" else "share/opencv5") + r"/haarcascades/.*\.xml"
+            ("etc" if os.name == "nt" else "share/opencv4") + r"/haarcascades/.*\.xml"
         ],
         "cv2.gapi": [
             "python/cv2" + r"/gapi/.*\.py"