Allow the user to dimension the translation cache
A previous commit had decreased to 6 (on android) and increased to 16
(other platforms) the nr of sectors in the translation cache.
This patch adds a command line option to let the user specify
the nr of sectors as e.g. 16 sectors might be a lot and cause
an out of memory for some workloads or might be too small for
huge executable or executables using a lot of shared libs.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13652 a5019735-40e9-0310-863c-91ae7b9d1cf9