x265 2.7

also, update stable assembler to nasm

Closes #24400.

Signed-off-by: commitay <commitay@users.noreply.github.com>

Formula/x265.rb

@@ -1,14 +1,9 @@
 class X265 < Formula
   desc "H.265/HEVC encoder"
   homepage "http://x265.org"
-
-  stable do
-    url "https://bitbucket.org/multicoreware/x265/downloads/x265_2.6.tar.gz"
-    sha256 "1bf0036415996af841884802161065b9e6be74f5f6808ac04831363e2549cdbf"
-
-    # build with nasm when >=2.7 is released
-    depends_on "yasm" => :build
-  end
+  url "https://bitbucket.org/multicoreware/x265/downloads/x265_2.7.tar.gz"
+  sha256 "d5e75fa62ffe6ed49e691f8eb8ab8c1634ffcc0725dd553c6fdb4d5443b494a2"
+  head "https://bitbucket.org/multicoreware/x265", :using => :hg
 
   bottle do
     cellar :any
@@ -17,13 +12,8 @@ class X265 < Formula
     sha256 "868310a95be1b8ad9e784a111fd41ec4a2ac4547f437e7cf5920f391dabdc454" => :el_capitan
   end
 
-  head do
-    url "https://bitbucket.org/multicoreware/x265", :using => :hg
-
-    depends_on "nasm" => :build
-  end
-
   depends_on "cmake" => :build
+  depends_on "nasm" => :build
   depends_on :macos => :lion
 
   def install