Improvements to the cross-compiling mechanism. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7560 91a5dbb7-01b9-0310-9b5f-b28072856b6e
Linux's sed is more forgiving than Darwin's sed. (dm)


git-svn-id: svn://mielke.cc/main/brltty@7561 91a5dbb7-01b9-0310-9b5f-b28072856b6e