Tidy up m_oset.c
- Document that the allocation function must ot return NULL.
- As a conequence of the previous requirement the various Create and AllocNode
  functions cannot return NULL. Remove pointless asserts at call sites.
- Remove documentation of undefined function  CreateWithCmp.
- Names of library functions (such as 'free') are reserved as a are names
  beginning with underscores. Don't use those.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14531 a5019735-40e9-0310-863c-91ae7b9d1cf9
6 files changed