android: add a script to regenerate prebuilt config

since x86 CROSS_COMPILER removal, it can be hard to do that properly

Change-Id: I6011e3b4dac5b5e670385df4812baf32f2e5ebc5
new adaptations for bionic

Change-Id: I2c910381a2e58dcac5a765471d9397175457f54f
update regex lib with coreutils 5.0 (do not merge)

Change-Id: If5d084863654b33fe98bf107789db6ced8631b31
update android config for 1.22.0

Change-Id: I9f765f2d8ad6cdee2d1b73071758e7fab5112ac0