Install calcurse-caldav by default

Add a new Makefile to build and install calcurse-caldav and include it
in the top-level build process.

Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>

Makefile.am

@@ -2,7 +2,7 @@ AUTOMAKE_OPTIONS= foreign
 
 ACLOCAL_AMFLAGS = -I m4
 
-SUBDIRS = po src test scripts
+SUBDIRS = po src test scripts contrib/caldav
 
 if ENABLE_DOCS
 SUBDIRS += doc

configure.ac

@@ -143,7 +143,7 @@ AM_CONDITIONAL(CALCURSE_MEMORY_DEBUG, test x$memdebug = xyes)
 #                                                               Create Makefiles
 #-------------------------------------------------------------------------------
 AC_OUTPUT(Makefile doc/Makefile src/Makefile test/Makefile scripts/Makefile \
-          po/Makefile.in po/Makefile)
+          po/Makefile.in po/Makefile contrib/caldav/Makefile)
 #-------------------------------------------------------------------------------
 #                                                                        Summary
 #-------------------------------------------------------------------------------

contrib/caldav/Makefile.am

@@ -0,0 +1,13 @@
+AUTOMAKE_OPTIONS = foreign
+
+dist_bin_SCRIPTS = \
+	calcurse-caldav
+
+EXTRA_DIST = \
+	calcurse-caldav.py
+
+CLEANFILES = \
+	calcurse-caldav
+
+calcurse-caldav: calcurse-caldav.py
+	cp "$(srcdir)/$<" "$@"