bootchart module cleanup

- create /lib/bootchart in initramfs, not in live filesystem
- use proper dracut API to install files

Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>

modules.d/00bootchart/install

@@ -2,8 +2,8 @@
 
 inst /sbin/bootchartd 
 inst /bin/bash 
-ln -s /init "${initdir}/sbin/init"
-mkdir -p /lib/bootchart/
+inst_symlink /init /sbin/init
+inst_dir /lib/bootchart/
 inst /lib/bootchart/bootchart-collector 
 inst /etc/bootchartd.conf 
 inst /sbin/accton 
@@ -12,4 +12,5 @@ inst /bin/echo
 inst /bin/grep 
 inst /bin/usleep
 inst /usr/bin/[  /bin/[
+
 mknod -m 0666 "${initdir}/dev/null" c 1 3