Recent Technology Levels of AIX 7.2 have made sys/socket.h more C++-aware,
which causes the fix to be applied in too many locations. This patch adds
more context for the selection to apply the fix more narrowly.
fixincludes/ChangeLog:
2020-09-17 David Edelsohn <dje.gcc@gmail.com>
* inclhack.def (aix_externcpp1): Add more context to select.
(aix_externcpp2): Same.
* fixincl.x: Regenerate.
* tests/base/sys/socket.h: Update expected results.
