new bootstrap breaks RCG built procedure

The RCG configure script was dropped in favor of an autoconf-generated configure in 8c01de98, in order to handle finding module symvers. However this breaks previous out-of-tree build paradigm.

The bootstrap script how needs to be run before configuring the build directory. But that finds the module symvers at time of build directory creation, not time of module creation. So this will break if the modules are updated after the build directory has been created.

The RCG needs find the module at build time, not at build directory creation/configure.