odrefresh: regenerate artifacts after ART APEX update

Replaces compile_bcp.sh to check and compile boot class path
extensions and system server jars.

Enable ART to load those artifacts when present in the ART APEX data
directory.

Bug: 160683548
Test: art_libartbase_tests
Test: adb root && adb odrefresh {--force-check,--force-compile}
Test: adb install com.android.art && adb reboot && adb root && \
      adb shell odrefresh {--check,--compile} && adb reboot && \
      adb shell cat /proc/<zygote>/maps | grep apexdata
Change-Id: I81bf520d38f9dc0109c91f192bc6e728099049fd
19 files changed