Update to seafile 1.8.1

This update adds a patch to link seaf-server-init against pthreads (and
regenerate all the automake stuff related to this change)

PKGBUILD

@@ -4,7 +4,7 @@
 pkgname=seafile
 
 # The version number for the software
-pkgver=1.7.1.1
+pkgver=1.8.1
 
 #The release number for the arch package, as fixes are added to the PKGBUILD, the release number will increase
 pkgrel=1
@@ -40,20 +40,25 @@ options=
 
 install=seafile.install
 
-source=("https://seafile.googlecode.com/files/seafile-1.7.1.1.tar.gz"
+source=("https://seafile.googlecode.com/files/seafile-1.8.1.tar.gz"
 	"seafile-admin.patch"
+	"tools_Makefile.am.patch"
 	"seafile.install")
-sha256sums=('840ca277756c3e2c4014a4b62ea1ed4eed732381910048387afcf52cbe2b4054'
+sha256sums=('b08d4a79ef26023e49e5882d88d6e8d918dbb3e0ea17694fea1d593b493c8f81'
 	'0d9578b85c00f3087a19f227b29c3fda13e83d093d024c68c1df5575d30d56dc'
+	'3afb6b0ce902215d4b4f119e1094b2b84b2ec39e4ba8bd29d40fd7b5cdf4fa0c'
 	'ce0cbf29b87e29709c6f7a1e6558a6c22d5aa24d41a9ed5b1dd44eab15c4d45c')
 
 prepare () {
 	cd "$srcdir/$pkgname-$pkgver"
 	patch -p1 -i $srcdir/seafile-admin.patch
+	patch -p1 -i $srcdir/tools_Makefile.am.patch
 }
 
 build () {
 	cd "$srcdir/$pkgname-$pkgver"
+	aclocal
+	automake --add-missing
 	./configure --enable-server --enable-httpserver --prefix=/usr PYTHON=/usr/bin/python2
 	make -j1
 }