GitLab

Previously find-ndk-root-win-host.cmd set both env. vars: NDK_ROOT
and NDK_WIN_HOST with the following compound statement

    endlocal && set "NDK_ROOT=%TEMP1%" && set "NDK_WIN_HOST=%TEMP2%"

Unfortunately, the "cmd" in WINE appends " " to all but the last
"set", causing error message reads:

  Can't recognize '"Z:\tmp\android-ndk-r9\prebuilt/windows-x86_64 /bin/make.exe" -f
      "Z:\tmp\android-ndk-r9\build/core/build-local.mk" SHELL=cmd
      as an internal or external command, or batch script.

Rename to find-win-host.cmd and recompute NDK_ROOT in both callers

Change-Id: I1c22ca905db74a09b3b99c06d70ef89b66732397