Bug 875126 - Make cgdb an option for mach --debugger. r=ted

build/automationutils.py

@@ -30,6 +30,10 @@ DEBUGGER_INFO = {
     "args": "-q --args"
   },
 
+  "cgdb": {
+    "interactive": True,
+    "args": "-q --args"
+  },
   "cgdb": {
     "interactive": True,
     "args": "-q --args"