File aacgain-prepare.patch of Package aacgain

--- mp3gain/aacgain/linux/prepare.sh	2010-08-01 02:42:25.000000000 +0200
+++ prepare.sh	2015-08-16 22:12:35.659052164 +0200
@@ -51,7 +51,7 @@
 #remove obsolete config.h; a correct one will be created by automake's configure
 rm -f ../../mp3gain/mpglibDBL/config.h
 #correct header include paths
-patch -p0 -N <mp3gain.patch
+patch -p4 -d ../../mp3gain/mpglibDBL -N <mp3gain.patch
 
 echo Creating the configure script
 cp -p configure.ac ../..