2014-01-22: merge repl into stable. stable v0.5.6

merge repl into stable.

diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 dnl run `autoreconf -i` to generate a configure script. 
 dnl Then run ./configure to generate a Makefile.
 dnl Finally run make to generate the project.
-AC_INIT([wisp], [0.5.4], 
+AC_INIT([wisp], [0.5.6],
         [arne_bab@web.de])
 # Check for programs I need for my build
 AC_CANONICAL_TARGET
diff --git a/wisp-repl-guile.sh b/wisp-repl-guile.sh
new file mode 100755
--- /dev/null
+++ b/wisp-repl-guile.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# if the spec file does not exist yet, run the build chain
+if test ! -f language/wisp/spec.scm; then
+    autoreconf -i && ./configure && make
+fi
+
+guile -L . --language=wisp