fix GNU parallel for MSys2 and update version

Add my patch to make GNU parallel build and work correctly on MSys2, it
has been submitted upstream as well:

https://savannah.gnu.org/bugs/index.php?52737

Update to latest version as well: 20171222

Remvoe erroneous 'procps' dependency.

Tested to work correcly.

parallel/PKGBUILD

@@ -2,18 +2,25 @@
 # Maintainer: David Mott <mott.david.j@gmail.com>
 
 pkgname=parallel
-pkgver=20170322
+pkgver=20171222
 pkgrel=1
 pkgdesc='A shell tool for executing jobs in parallel'
 arch=('any')
 url='https://www.gnu.org/software/parallel/'
 license=('GPL3')
-depends=('perl' 'procps')
-source=(https://ftp.gnu.org/gnu/$pkgname/$pkgname-$pkgver.tar.bz2)
-sha1sums=('171395fc77b9f83cb06ba847cae7f7a8ecba4a19')
+depends=('perl')
+source=(
+    https://ftp.gnu.org/gnu/$pkgname/$pkgname-$pkgver.tar.bz2
+    0001-support-MSys2.patch
+)
+sha1sums=(
+    'e8632264794c3408cf58502bdc187205638de7a2'
+    'd341977c3565e0cc8bc9c703ae1adfd874219aa7'
+)
 
 build() {
   cd "$pkgname-$pkgver"
+  patch -p1 -i "${srcdir}/0001-support-MSys2.patch"
   ./configure --prefix=/usr
   make
 }