Expose ucol_clone to NDK

libicu/src/shim.cpp is manually edited to call ucol_safeClone instead
of ucol_clone to workaround b/217701392. The API behavior isn't affected.

Bug: 210982984
Test: atest CtsIcu4cTestCases
Change-Id: I13caf9df359cdedd11d44ad8f0c729449de37ccf
5 files changed