libstd: Get rid of `move`.
libstd: Fix broken test.
libcargo: Get rid of `move`.
librustdoc: Get rid of `move`.
libcore: Get rid of `move`.
compiletest: Get rid of `move`.
librustc: Get rid of `move`.
libsyntax: Get rid of uses of `move` and don't parse it.
tests/tutorials: Get rid of `move`.
libsyntax: Remove move as a keyword.