These versions of conf/mconf are forked from the upstream, and the CMake system allows mconf-idf to
be installed externally on the path. So the best option is to rename.
Includes changes to Windows installer for v1.1
Fix warnings where undefined vars are used.
Make Kconfig emit "FOO=" for unset bool options
To ensure make variables are always defined, even if empty.
When writing auto.conf, include symbols disabled by dependency to make sure all make variables are always defined.
Fixesespressif/esp-idf#137
Cherry-picked from https://github.com/espressif/esp-idf/pull/138
