Use more inclusive language for seccomp filter

blacklist and whitelist are replaced with blocklist and allowlist
respectively.

Test: CtsSeccompHostTestCases
Change-Id: I39d9eda89038d1addbdaed59284a254a34cea1c6
diff --git a/libc/SECCOMP_BLOCKLIST_COMMON.TXT b/libc/SECCOMP_BLOCKLIST_COMMON.TXT
new file mode 100644
index 0000000..22c9844
--- /dev/null
+++ b/libc/SECCOMP_BLOCKLIST_COMMON.TXT
@@ -0,0 +1,10 @@
+# This file is used to populate seccomp's allowlist policy in combination with SYSCALLS.TXT.
+# Note that the resultant policy is applied only to zygote spawned processes.
+#
+# The final seccomp allowlist is SYSCALLS.TXT - SECCOMP_BLOCKLIST.TXT + SECCOMP_ALLOWLIST.TXT
+# Any entry in the blocklist must be in the syscalls file and not be in the allowlist file
+#
+# This file is processed by a python script named genseccomp.py.
+
+int     swapon(const char*, int) all
+int     swapoff(const char*) all