fix windows build scripts, add windows opus support

scripts/waifulib/masm.py

@@ -0,0 +1,22 @@
+# encoding: utf-8
+# masm.py -- Microsoft Macro Assembler file support
+
+from waflib import Errors, Logs, Task
+from waflib.TaskGen import extension
+
+class masm(Task.Task):
+	"""
+	Compiles assembler files with masm
+	"""
+	color = 'BLUE'
+	run_str = '${AS} ${ASFLAGS} ${ASMPATH_ST:INCPATHS} ${ASMDEFINES_ST:DEFINES} ${AS_TGT_F}${TGT} ${AS_SRC_F}${SRC}'
+
+@extension('.masm')
+def create_masm_task(self, node):
+	return self.create_compiled_task('masm', node)
+
+def configure(conf):
+	conf.env.AS = conf.env.CC[0].replace('CL.exe', 'ml64.exe')
+	conf.env.ASFLAGS = ['/nologo', '/c']
+	conf.env.AS_SRC_F = ['']
+	conf.env.AS_TGT_F = ['/Fo']