Convert to new override syntax

This is the result of automated script (0.9.1) conversion:

oe-core/scripts/contrib/convert-overrides.py .

converting the metadata to use ":" as the override character instead of "_".

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-python/recipes-devtools/python/python3-bitstring_3.1.9.bb

@@ -10,7 +10,7 @@ PYPI_PACKAGE = "bitstring"
 
 inherit pypi setuptools3
 
-RDEPENDS_${PN} = "\
+RDEPENDS:${PN} = "\
     ${PYTHON_PN}-core \
     ${PYTHON_PN}-numbers \
     ${PYTHON_PN}-mmap \