This just reads everything remaining in the stream in a blocking way and will
be used to get the data remaining in the stream buffers after the child
process had been already closed (and hence can't write any more to it and
there is no risk of deadlock).
See #10258.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74343 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Get rid of the surprising src/common/execcmn.cpp which had a .cpp extension
but was supposed to be used as an included file only and move its contents to
a new private header to make using wxStreamTempInputBuffer class simpler.
See #10258.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74337 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775