Merge pull request #4287 from hawkw/eliza/IP_BOUND_IF-solarish

solarish: define `IP_BOUND_IF` and `IPV6_BOUND_IF`

Author: tgross35

libc-test/semver/solarish.txt

@@ -1,10 +1,12 @@
 AIO_ALLDONE
 AIO_CANCELED
 AIO_NOTCANCELED
+IPV6_BOUND_IF
 IPV6_DONTFRAG
 IPV6_PKTINFO
 IPV6_RECVTCLASS
 IPV6_TCLASS
+IP_BOUND_IF
 IP_DONTFRAG
 IP_PKTINFO
 IP_TOS

src/unix/solarish/mod.rs

@@ -1148,6 +1148,7 @@ pub const IPV6_DONTFRAG: c_int = 0x21;
 pub const IPV6_SEC_OPT: c_int = 0x22;
 pub const IPV6_TCLASS: c_int = 0x26;
 pub const IPV6_V6ONLY: c_int = 0x27;
+pub const IPV6_BOUND_IF: c_int = 0x41;
 
 cfg_if! {
     if #[cfg(target_pointer_width = "64")] {
@@ -1691,6 +1692,7 @@ pub const IP_ADD_SOURCE_MEMBERSHIP: c_int = 23;
 pub const IP_DROP_SOURCE_MEMBERSHIP: c_int = 24;
 pub const IP_BLOCK_SOURCE: c_int = 21;
 pub const IP_UNBLOCK_SOURCE: c_int = 22;
+pub const IP_BOUND_IF: c_int = 0x41;
 
 // These TCP socket options are common between illumos and Solaris, while higher
 // numbers have generally diverged: