move source files to "src" subdirectory

SConstruct

@@ -37,18 +37,14 @@ env.Append(CCFLAGS = ['-O2', '-Wall'])
 if DEBUG:
     env.Append(CCFLAGS = ['-g'])
 
-sources = [Glob('*.cc')]
-if not os.path.exists('ag_lua.cc'):
-    sources.append('ag_lua.cc')
-if not os.path.exists('sdl_keymap.cc'):
-    sources.append('sdl_keymap.cc')
+sources = [Glob('src/*.cc'), 'ag_lua.cc', 'sdl_keymap.cc']
 for sd in subdirs:
     sources += [Glob(sd + '/*.c'), Glob(sd + '/*.cc')]
 
 def F2C(target, source, env):
     f = open(str(target[0]), 'w')
     for s in source:
-        c_name = re.sub(r'\W', '_', str(s))
+        c_name = re.sub(r'\W', '_', str(s).split('/')[-1])
         f.write('unsigned char %s[] = {' % c_name)
         src = open(str(s), 'r')
         s_len = 0
@@ -76,7 +72,7 @@ def bt(cmd):
 env.Append(BUILDERS = {'SDLKeymap' : Builder(action = SDLKeymap)})
 env.Append(BUILDERS = {'F2C' : Builder(action = F2C)})
 
-env.F2C('ag_lua.cc', 'ag.lua')
+env.F2C('ag_lua.cc', 'src/ag.lua')
 env.SDLKeymap('sdl_keymap.cc', 'gen-sdl-keymap.pl')
 env.Program(target, sources)