watchman 2.8.2

Closes Homebrew/legacy-homebrew#21611.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/watchman.rb

@@ -0,0 +1,30 @@
+require 'formula'
+
+class Watchman < Formula
+  homepage 'https://github.com/facebook/watchman'
+  head 'https://github.com/facebook/watchman.git'
+  url 'https://github.com/facebook/watchman/archive/v2.8.2.tar.gz'
+  sha1 'd46f5fa29de4fb30d7dcc0ec7998099567b09a5f'
+
+  depends_on :autoconf
+  depends_on :automake
+  depends_on 'pkg-config' => :build
+  depends_on 'pcre'
+
+  def install
+    system "./autogen.sh"
+    system "./configure", "--disable-debug", "--disable-dependency-tracking",
+                          "--prefix=#{prefix}",
+                          "--with-pcre"
+    system "make"
+    system "make install"
+  end
+
+  def caveats; <<-EOS.undent
+    To increase file limits add 'kern.maxfiles=10485760' and 'kern.maxfilesperproc=10485760'
+    to /etc/sysctl.conf (use 'sysctl -w' to do so immediately).
+
+    See https://github.com/facebook/watchman#max-os-file-descriptor-limits
+    EOS
+  end
+end