style: Fix PEP8 blank lines issues in Python files

Done with `autopep8 --select=E3,W3`, fixes:

- E301 - Add missing blank line.
- E302 - Add missing 2 blank lines.
- E303 - Remove extra blank lines.
- E304 - Remove blank line following function decorator.
- E309 - Add missing blank line.
- W391 - Remove trailing blank lines.

platform/android/detect.py

@@ -3,12 +3,15 @@ import sys
 import string
 import platform
 
+
 def is_active():
     return True
 
+
 def get_name():
     return "Android"
 
+
 def can_build():
 
     import os
@@ -17,6 +20,7 @@ def can_build():
 
     return True
 
+
 def get_opts():
 
     return [
@@ -47,6 +51,7 @@ def create(env):
         env.Tool('gcc')
     return env.Clone(tools=tools);
 
+
 def configure(env):
 
     # Workaround for MinGW. See:
@@ -102,7 +107,6 @@ def configure(env):
         env.Tool('gcc')
         env['SHLIBSUFFIX'] = '.so'
 
-
     neon_text = ""
     if env["android_arch"] == "armv7" and env['android_neon'] == 'yes':
         neon_text = " (with neon)"
@@ -241,7 +245,6 @@ def configure(env):
         env.Append(LIBS=['gnustl_static'])
         env.Append(CCFLAGS=["-fno-exceptions", '-DNO_SAFE_CAST'])
 
-
     import methods
     env.Append(BUILDERS={'GLSL120': env.Builder(action=methods.build_legacygl_headers, suffix='glsl.h', src_suffix='.glsl')})
     env.Append(BUILDERS={'GLSL': env.Builder(action=methods.build_glsl_headers, suffix='glsl.h', src_suffix='.glsl')})