aui.boot: Android or iOS subbuild of aui.toolbox breaks ~/.aui/repo/aui #682
Description
Prior to ef16827, aui would build aui.toolbox in separate aui.boot cache folder crosscompile-host. Since that commit, it will use the same folder ~/.aui/repo/aui for both consumer application and aui.toolbox. To build aui.toolbox, ef16827 checks out v8.0.0-rc.12 in that directory. The same version persists to build consumer application, regardless which version it has specified.
The build will fail if the same pipeline builds aui.toolbox, and the consumer application uses newer features.