Make GYP build usable for day-to-day work (second attempt)

tools/test.py

Index: tools/test.py
diff --git a/tools/test.py b/tools/test.py
index 613261447debd048a82d0b012927a82d53198b4b..59b384676346648f646bcbbeb950916242c9a781 100755
--- a/tools/test.py
+++ b/tools/test.py
@@ -1181,6 +1181,8 @@ def BuildOptions():
       default=False, action="store_true")
   result.add_option("--build-only", help="Only build requirements, don't run the tests",
       default=False, action="store_true")
+  result.add_option("--build-system", help="Build system in use (scons or gyp)",
+      default='scons')
   result.add_option("--report", help="Print a summary of the tests to be run",
       default=False, action="store_true")
   result.add_option("-s", "--suite", help="A test suite",
@@ -1280,6 +1282,10 @@ def ProcessOptions(options):
   if options.noprof:
     options.scons_flags.append("prof=off")
     options.scons_flags.append("profilingsupport=off")
+  if options.build_system == 'gyp':
+    if options.build_only:
+      print "--build-only not supported for gyp, please build manually."
+      options.build_only = False
   return True
 
 
@@ -1399,6 +1405,9 @@ def Main():
     run_valgrind = join(workspace, "tools", "run-valgrind.py")
     options.special_command = "python -u " + run_valgrind + " @"
 
+  if options.build_system == 'gyp':
+    SUFFIX['debug'] = ''
+
   shell = abspath(options.shell)
   buildspace = dirname(shell)