* lib/install-sh (dstdir): Don't use semicolons inside { } in

* lib/install-sh (dstdir): Don't use semicolons inside { } in
sed scripts, as Posix says it's not portable.
* lib/missing (file): Likewise.
* lib/am/distdir.am (distcheck): Likewise.
* tests/comment7.test, tests/comment9.test, tests/confh.test: Likewise
* tests/distcom2.test, tests/distcom3.test: Likewise.
* tests/distcom4.test, tests/distcom5.test: Likewise.
* tests/distcom6.test, tests/include.test, tests/pluseq8.test: Likewise.