waf: mavgen: expand tabs to spaces

Although waf's coding style uses tabs instead of spaces, scripts created for
this repository have been using spaces from the beginning.

Tools/ardupilotwaf/mavgen.py

@@ -11,12 +11,12 @@ from waflib.TaskGen import feature, before_method, extension
 import os
 
 class mavgen(Task.Task):
-	"""generate mavlink header files"""
-	color   = 'GREEN'
-	run_str = '${PYTHON} ${MAVGEN} --lang=C --wire-protocol=1.0 --output ${TGT} ${SRC}'
+    """generate mavlink header files"""
+    color   = 'GREEN'
+    run_str = '${PYTHON} ${MAVGEN} --lang=C --wire-protocol=1.0 --output ${TGT} ${SRC}'
 
 def options(opt):
-	opt.load('python')
+    opt.load('python')
 
 @feature('mavgen')
 @before_method('process_source')
@@ -34,26 +34,26 @@ def process_mavgen(self):
     self.create_task('mavgen', inputs, outputs)
 
 def configure(cfg):
-	"""
-	setup environment for mavlink header generator
-	"""
-	cfg.load('python')
-	cfg.check_python_version(minver=(2,7,0))
+    """
+    setup environment for mavlink header generator
+    """
+    cfg.load('python')
+    cfg.check_python_version(minver=(2,7,0))
 
-	env = cfg.env
-	cfg.env.env = dict(os.environ)
+    env = cfg.env
+    cfg.env.env = dict(os.environ)
 
-	cfg.start_msg('Checking for message_definitions')
-	if not cfg.srcnode.find_resource('modules/mavlink/message_definitions/v1.0/ardupilotmega.xml'):
-		cfg.fatal(env.MAV_MSG_DEFS + ' not found, please run: git submodule init && git submodule update', color='RED')
-		return
-	cfg.end_msg('success')
+    cfg.start_msg('Checking for message_definitions')
+    if not cfg.srcnode.find_resource('modules/mavlink/message_definitions/v1.0/ardupilotmega.xml'):
+        cfg.fatal(env.MAV_MSG_DEFS + ' not found, please run: git submodule init && git submodule update', color='RED')
+        return
+    cfg.end_msg('success')
 
-	env.MAVLINK_DIR = cfg.srcnode.find_dir('modules/mavlink/').abspath()
+    env.MAVLINK_DIR = cfg.srcnode.find_dir('modules/mavlink/').abspath()
 
-	env.MAVLINK_HEADERS = cfg.bldnode.make_node('/libraries/GCS_MAVLink/include/mavlink/v1.0/').abspath()
+    env.MAVLINK_HEADERS = cfg.bldnode.make_node('/libraries/GCS_MAVLink/include/mavlink/v1.0/').abspath()
 
-	env.MAVGEN = env.MAVLINK_DIR  + '/pymavlink/tools/mavgen.py'
-	cfg.env.env['PYTHONPATH'] = env.MAVLINK_DIR
+    env.MAVGEN = env.MAVLINK_DIR  + '/pymavlink/tools/mavgen.py'
+    cfg.env.env['PYTHONPATH'] = env.MAVLINK_DIR
 
-	env.MAV_MSG_DEFS = cfg.srcnode.find_resource('modules/mavlink/message_definitions/v1.0/ardupilotmega.xml').abspath()
+    env.MAV_MSG_DEFS = cfg.srcnode.find_resource('modules/mavlink/message_definitions/v1.0/ardupilotmega.xml').abspath()