Enforce a modified kr style.

Use "make indent" from now on before committing.

Makefile.am

diff --git a/Makefile.am b/Makefile.am
index 76541d7..82c4c95 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,3 +3,6 @@
 
 doc:
 	doxygen doxygen.cfg
+
+indent:
+	indent -kr -ut -ts4 -l120 src/*.c src/*.h