makeself: fix makeself-header.sh not found

srcpkgs/makeself/template

@@ -1,7 +1,7 @@
 # Template file for 'makeself'
 pkgname=makeself
 version=2.4.0
-revision=1
+revision=2
 archs=noarch
 create_wrksrc=yes
 makedepends="tar gzip bzip2"
@@ -23,6 +23,9 @@ do_build() {
 do_install() {
 	cd ${wrksrc}/${pkgname}-${version}
 
+	# rename makeself-header.sh to makeself-header inside makeself.sh because it will be renamed later
+	sed -i 's/^HEADER=\`dirname "$0"\`\/makeself-header.sh$/HEADER=\`dirname "$0"\`\/makeself-header/' makeself.sh
+
 	vmkdir usr/share/man/man1
 	for f in makeself makeself-header; do
 		vbin ${f}.sh ${f}