Shell-commands: RPL commands are only compatible with rpl-lite. Disable them when rpl-lite is not used.

Viewconf: now show config flags after module-specific .h file inclusion, i.e., show final values rather than _CONF_ flags

Makefile.include: add rules to generate preprocessed versions of C files, or assembly code, for any file

This was used by platform CC2530DK which has been removed.

Previously, the CC2538 port would compile USB-related files from their original location under the CC2531 CPU dir. We are now removing the latter, but we need to keep those files.

Users should be adding such things to their local .git/info/exclude.

Those were relevant to platform/win32