Mkefile.defs: default memory manager set to q_malloc

- debug option is left unset (no DBG_QM_MALLOC)
- lower memory chunk overhead with faster join

Makefile.defs

@@ -167,7 +167,7 @@ EXTRAVERSION = -dev5
 # memory manager switcher
 # 0 - f_malloc (fast malloc)
 # 1 - q_malloc (quick malloc)
-MEMMNG ?= 0
+MEMMNG ?= 1
 # memory debugger switcher
 # 0 - off (no-debug mode)
 # 1 - on (debug mode)