Added dtoa license file which had been left out of the initial commit.
Added dtoa license file which had been left out of the initial commit.

git-svn-id: b1e6f66988cb8df8b74b1483911491c3c383faaa@3 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh