[analyzer] Move UninitializedObjectChecker out of alpha

Moved UninitializedObjectChecker from the 'alpha.cplusplus' to the
'optin.cplusplus' package.

Differential Revision: https://reviews.llvm.org/D58573


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@358797 91177308-0d34-0410-b5e6-96231b3b80d8
13 files changed