discount 2.1.5a

Upgrade discount to the latest stable.  This includes bug fixes
for clang. So remove the patch. Tested with clang and llvm from
XCode-4.4.1.

Fixes Homebrew/homebrew#14011

Closes Homebrew/homebrew#14100.

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

Formula/discount.rb

@@ -2,14 +2,8 @@ require 'formula'
 
 class Discount < Formula
   homepage 'http://www.pell.portland.or.us/~orc/Code/discount/'
-  url 'https://github.com/Orc/discount/tarball/v2.1.3'
-  sha1 '9d2dc33a1f80e7dd56f2c7ee1aec0a3e6e60302f'
-
-  # Work around clang-incompatible test
-  # We know we have strcasecmp and strncasecmp, so just
-  # skip the test. Repoted upstream in
-  # https://github.com/Orc/discount/issues/55
-  def patches; DATA; end
+  url 'https://github.com/Orc/discount/tarball/v2.1.5a'
+  sha1 '73dcf117fa6ca15332c67f246544cd224bfc1774'
 
   def install
     system "./configure.sh", "--prefix=#{prefix}",
@@ -22,32 +16,3 @@ class Discount < Formula
     system "make install.everything"
   end
 end
-
-__END__
-diff --git a/configure.sh b/configure.sh
-index 43ef971..821832b 100755
---- a/configure.sh
-+++ b/configure.sh
-@@ -102,22 +102,6 @@ else
-     AC_DEFINE 'COINTOSS()' '1'
- fi
- 
--if AC_CHECK_FUNCS strcasecmp; then
--    :
--elif AC_CHECK_FUNCS stricmp; then
--    AC_DEFINE strcasecmp stricmp
--else
--    AC_FAIL "$TARGET requires either strcasecmp() or stricmp()"
--fi
--
--if AC_CHECK_FUNCS strncasecmp; then
--    :
--elif AC_CHECK_FUNCS strnicmp; then
--    AC_DEFINE strncasecmp strnicmp
--else
--    AC_FAIL "$TARGET requires either strncasecmp() or strnicmp()"
--fi
--
- if AC_CHECK_FUNCS fchdir || AC_CHECK_FUNCS getcwd ; then
-     AC_SUB 'THEME' ''
- else