BUILD: makefile: Enable closefrom() support on Solaris
Solaris 9 (released 2002) added support for closefrom().
I bumped the version in the comment to 10 as the default feature
flags already has event ports enabled which were introduced in
Solaris 10.
diff --git a/INSTALL b/INSTALL
index 69fe94f..04b0349 100644
--- a/INSTALL
+++ b/INSTALL
@@ -374,7 +374,7 @@
- linux-glibc for Linux kernel 2.6.28 and above
- linux-glibc-legacy for Linux kernel 2.6.28 and above without new features
- linux-musl for Linux kernel 2.6.28 and above with musl libc
- - solaris for Solaris 8 or 10 (others untested)
+ - solaris for Solaris 10 and above
- freebsd for FreeBSD 5 to 12 (others untested)
- netbsd for NetBSD
- osx for Mac OS/X