Add getline_wrapped() to parse config files

Basically copied from module-init-tools
diff --git a/Makefile.am b/Makefile.am
index 4a0f09b..9da0454 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -33,6 +33,7 @@
 	libkmod/libkmod.c \
 	libkmod/libkmod-list.c \
 	libkmod/libkmod-loaded.c \
+	libkmod/libkmod-util.c \
 	libkmod/libkmod-module.c
 
 EXTRA_DIST += libkmod/libkmod.sym