Use in_addr in ip_mreq_source and ip_msfilter.
This adds a new mechanism to say "replace struct S with #include <bits/S.h>".
Also switch epoll_event over to the new mechanism.
Also use the kernel's struct sockaddr_storage directly rather than behind
an unnecessary #define.
This patch also removes some dead code in the header scrubber. This code
still needs rewriting completely. I learned that a "block" isn't necessarily
a single struct definition, say; it might be a run of them. It seems like
a block is a run of preprocessor directives or a run of regular code.
Bug: https://issuetracker.google.com/36987220
Test: new test
Change-Id: Ic6a5c09559766a4babe3cd4c3ea538b885e07308
diff --git a/libc/kernel/uapi/linux/socket.h b/libc/kernel/uapi/linux/socket.h
index 371ba30..4f52bcb 100644
--- a/libc/kernel/uapi/linux/socket.h
+++ b/libc/kernel/uapi/linux/socket.h
@@ -21,7 +21,7 @@
#define _K_SS_MAXSIZE 128
#define _K_SS_ALIGNSIZE (__alignof__(struct sockaddr *))
typedef unsigned short __kernel_sa_family_t;
-struct __kernel_sockaddr_storage {
+struct sockaddr_storage {
__kernel_sa_family_t ss_family;
char __data[_K_SS_MAXSIZE - sizeof(unsigned short)];
} __attribute__((aligned(_K_SS_ALIGNSIZE)));