Android patch: Android support for ICU4C tests (Part 3)

- Fixes letest on host Linux
- ctest_dataOutDir() function has duplicated in the common lib ctestfw.
  Thus, the static version in letest should be removed.

Bug: 120776993
Test: "make check" completed with some existing failures
Change-Id: Iae23c36264f4ff4035f9aae8976798ece8687de1
1 file changed