Since python 3.10 - we haven't been able to profile python interpreters that
have been compiled without symbols. This is because cpython changed where
the 'PyRuntime' global is stored in python 3.10, from being in the BSS section
into being in its own named section in the binary.

This especially affected profiling on windows, where you'd have to install
python symbols to be able to use py-spy.

Fix by reading in the address/size of the the PyRuntime section from the
elf/mach/pe binaries and using that to scan python interpreters when symbols
aren't available.

This reverts commit 68d418b.

This reverts commit e79559a.