add documentation/tutorial on how to valgrind Sage

[sagetrac-mabshoff]

See http://wiki.sagemath.org/ValgrindingSage for a working copy of the document. Once it is deemed usable we should use it to html and merge it into the official documentation.

Cheers,

Michael

CC: @sagetrac-mvngu

Component: documentation

Issue created by migration from https://trac.sagemath.org/ticket/603

[kcrisman]

comment:1

It's probably better to have this in the documentation in some form than not at all - even a brief intro in the Developer Guide might encourage someone to learn to use it properly. I'm cc:ing a likely suspect for doing so nicely :)

[rwst]

comment:7

Just a note to add a note that sage -t --valgrind runs the tests with the --serial option in order to have them all in one process (and therefore it's not necessary to add it explicitly---which may not work).