ensure headers are sanitized before release

When a public header is removed, we need to ensure it gets removed
in the release distribution as well. Also, remove nonexistent *.he
exclude.

.gitignore

@@ -106,7 +106,6 @@ tls/*.h
 include/pqueue.h
 include/tls.h
 include/openssl/*.h
-include/openssl/*.he
 
 !/apps/apps_win.c
 !/apps/poll_win.c

dist.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 set -e
 
-rm -f man/*.1 man/*.3
+rm -f man/*.1 man/*.3 include/openssl/*.h
 ./autogen.sh
 ./configure
 make distcheck