WITHOUT_CROSS_COMPILER: Fix installworld.

Since no WORLDTMP/usr/bin/cc is created, cc cannot be found
during installworld time since /usr/bin is not in the PATH.
Pass along the known compiler metadata to allow installworld
to work. The same fix was used for WITH_SYSTEM_COMPILER.

A better route would be to store a cookie in buildworld
containing this compiler metadata and then using that
at install time, rather than rerunning cc.

Reported by: Mark Millard
Sponsored by: EMC / Isilon Storage Division