[libtasn1] avoid regeneration of docs

[Nikos Mavrogiannopoulos]

commit 3e97e24f29b07fc0efc6a630a03c4ee355f74dce
Author: Nikos Mavrogiannopoulos <nmav at redhat.com>
Date:   Wed Nov 27 14:26:56 2013 +0100

    avoid regeneration of docs

 libtasn1.spec |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/libtasn1.spec b/libtasn1.spec
index e4b6a30..1f73f54 100644
--- a/libtasn1.spec
+++ b/libtasn1.spec
@@ -55,6 +55,8 @@ data.
 
 %build
 %configure --disable-static --disable-silent-rules
+# libtasn1 likes to regenerate docs
+touch doc/stamp_docs
 
 make %{?_smp_mflags}