Small source tree cleanup:

Small source tree cleanup:
- Remove leftovers from rbuild era.
- Remove .hgeol that was introduced in r53995 in an attempt to have Mercury "get[ing] native line endings":
<@hbelusca> tkreuzer - hi tkreuzer! do you know whether you still need this .hgeol file at the root of our source tree?
<@tkreuzer> hbelusca: no, feel free to delete it
- rgenstat/llmosrt.c --> llmsort.c (take it from cdmake); this is however an unused tool in our build toolchain.

svn path=/trunk/; revision=66570