Add lhasa.h catch-all header.

lib/public/Makefile.am

@@ -1,6 +1,7 @@
 
 headerfilesdir=$(includedir)/liblhasa-1.0
 headerfiles_HEADERS=      \
+   lhasa.h                \
    lha_file_header.h      \
    lha_input_stream.h     \
    lha_reader.h

lib/public/lhasa.h

@@ -0,0 +1,29 @@
+/*
+
+Copyright (c) 2011, 2012, Simon Howard
+
+Permission to use, copy, modify, and/or distribute this software
+for any purpose with or without fee is hereby granted, provided
+that the above copyright notice and this permission notice appear
+in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+ */
+
+#ifndef LHASA_PUBLIC_LHASA_H
+#define LHASA_PUBLIC_LHASA_H
+
+#include "lha_file_header.h"
+#include "lha_input_stream.h"
+#include "lha_reader.h"
+
+#endif /* #ifndef LHASA_PUBLIC_LHASA_H */
+