AIDEGen: doesn't work when OUT_DIR isn't out

AIDEGen should make use of OUT_DIR instead of using out folder directly.

Bug: 128453332
Test: 1. cd $ANDROID_BUILD_TOP
      2. export OUT_DIR=out-cf
      3. source build/envsetup.sh
      4. lunch aosp_x86_64-eng
      5. m
      6. m aidegen
      7. out-cf/host/linux-x86/bin/aidegen-dev frameworks/base -s
      8. IntelliJ should be launched.

Change-Id: Iaaf08bda8bf6dbcb4d555550a62c8e2d397329ae
2 files changed