Avoid excessive fragmentation in m_mallocfree facility by munmapping
unused superblocks in some circumstances.  Bug 250101 (==269884,
==275852)
(Philippe Waroquiers, philippe.waroquiers@skynet.be)



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11911 a5019735-40e9-0310-863c-91ae7b9d1cf9
9 files changed