Merge revisions 14445 and 14446 from the BUF_REMOVAL branch to trunk.
Two things:
- remove the buffer argument from VG_(DebugInfo_sect_kind)
- allocate AddrInfo::SectKind::objname dynamically


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14719 a5019735-40e9-0310-863c-91ae7b9d1cf9