if a port needs 2.x then set MODPY_VERSION=${MODPY_DEFAULT_VERSION_2}.
This commit doesn't change any versions currently used; it may be that
some ports have MODPY_DEFAULT_VERSION_2 but don't require it, those
should be cleaned up in the course of updating ports where possible.
Python module ports providing py3-* packages should still use
FLAVOR=python3 so that we don't have a mixture of dependencies some
using ${MODPY_FLAVOR} and others not.
coccigrep is a semantic grep for the C language based on coccinelle.
It can be used to find where a given structure is used in code files.
coccigrep depends on the spatch program which comes with coccinelle.
quick contrived example to find lines referencing m_len of a struct
mbuf, regardless of actual variable name:
$ coccigrep -t "struct mbuf" -a m_len /sys/netinet/ip_*.c
