configure: Add basic valgrind-massif support

With the parameter --toolchain valgrind-massif, the configure
script sets reasonable defaults that can be overridden as explained
in the documentation.

configure

@@ -2211,6 +2211,10 @@ case "$toolchain" in
         add_cflags  -fsanitize=thread -pie
         add_ldflags -fsanitize=thread -pie
     ;;
+    valgrind-massif)
+        target_exec_default="valgrind"
+        target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
+    ;;
     valgrind-memcheck)
         target_exec_default="valgrind"
         target_exec_args="--track-origins=yes --leak-check=full"

doc/developer.texi

@@ -578,9 +578,10 @@ new test.
 
 The configure script provides a shortcut for using valgrind to spot bugs
 related to memory handling. Just add the option
-@code{--toolchain=valgrind-memcheck} to your configure line, and
-reasonable defaults will be set for running FATE under the supervision
-of the @strong{memcheck} tool of the valgrind suite.
+@code{--toolchain=valgrind-memcheck} or @code{--toolchain=valgrind-massif}
+to your configure line, and reasonable defaults will be set for running
+FATE under the supervision of either the @strong{memcheck} or the
+@strong{massif} tool of the valgrind suite.
 
 In case you need finer control over how valgrind is invoked, use the
 @code{--target-exec='valgrind <your_custom_valgrind_options>} option in