Move valgrind and callgrind information to our wiki

HACKING

@@ -81,72 +81,10 @@ crashes. I haven't investigated whether this is because I should first have
 linked gnucash with -lefence or because a real problem in GnuCash code.
 
 
-Using Valgrind with GnuCash
----------------------------
--- run ${prefix}/bin/gnucash-valgrind
-
-However, I did not find valgrind to be useful.  It reported a bunch of
-guile bugs, some g_hash_table bugs, and then the program exited prematurely 
-for no apparent reason. :-( 
-
-For the moment, gnucash-valgrind uses the suppressions in 
-src/debug/valgrind/valgrind-*.supp
-
-For valgrind-gnucash.supp, this comment was made (but is perhaps outdated 
-by now ?):
-This file needs to be cleaned up in two ways:
-
-1/ There are a bunch of duplicate suppressions in the file.
-   * The suppressions in place were auto-generated by valgrind itself
-     [--gen-suppressions=yes], and it makes no effort to output the
-     suppression only once.
-
-2/ There are a bunch of suppressions which need to not be suppressions, but
-   instead just not be generated by valgrind.
-
-Using Callgrind with GnuCash
-----------------------------
-In order to debug with callgrind, you need to add a couple of code
-fragments around the section of code you are profiling.  This is
-easiest if you can find the function that invokes the routine(s) you
-want to profile, add the following code around the function call of
-interest.
-
-Add the following to the start of the file:
-
-#include <valgrind/callgrind.h>
-
-Add the following to the start of the calling function:
-
-static GTimeVal start, end;
-
-Add the following just before the function of interest:
-
-g_print("Start timing.\n");
-g_get_current_time(&start);
-CALLGRIND_START_INSTRUMENTATION();
-CALLGRIND_TOGGLE_COLLECT();
-
-Add the following just after the function of interest:
-
-CALLGRIND_TOGGLE_COLLECT();
-CALLGRIND_STOP_INSTRUMENTATION();
-g_get_current_time(&end);
-if (start.tv_usec > end.tv_usec) {
-  end.tv_usec += 1000000;
-  end.tv_sec  -= 1;
-}
-g_print("Callgrind enabled for %d.%6d seconds.\n",
-        (int)(end.tv_sec - start.tv_sec),
-        (int)(end.tv_usec - start.tv_usec));
-
-You will need to recompile, and then run the 'gnucash-valgrind'
-wrapper script instead of the normal 'gnucash' script.
-
-NOTE: Version 3.2 of valgrind has changed the above macros to no
-longer take an argument. In order to compile with this version of
-valgrind you will need to remove the trailing parentheses and
-semicolon.
+Using Valgrind/Callgrind with GnuCash
+-------------------------------------
+This section has been moved to
+https://wiki.gnucash.org/wiki/Coder_Tools
 
 
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