postgresql: optional ossp-uuid

A certain large cat doesn't work with ossp-uuid.

Closes Homebrew#12210.

Signed-off-by: Charlie Sharpsteen <source@sharpsteen.net>

Library/Formula/postgresql.rb

@@ -12,6 +12,7 @@ class Postgresql < Formula
   def options
     [
       ['--32-bit', 'Build 32-bit only.'],
+      ['--without-ossp-uuid', 'Build without OSSP uuid.'],
       ['--no-python', 'Build without Python support.'],
       ['--no-perl', 'Build without Perl support.'],
       ['--enable-dtrace', 'Build with DTrace support.']
@@ -33,9 +34,9 @@ def install
             "--with-krb5",
             "--with-openssl",
             "--with-libxml",
-            "--with-libxslt",
-            "--with-ossp-uuid"]
+            "--with-libxslt"]
 
+    args << "--with-ossp-uuid" unless ARGV.include? '--without-ossp-uuid'
     args << "--with-python" unless ARGV.include? '--no-python'
     args << "--with-perl" unless ARGV.include? '--no-perl'
     args << "--enable-dtrace" if ARGV.include? '--enable-dtrace'