libtheora: patch autogen.sh to avoid (#20008)

configure problem when spack runs the configure stage of its build/install pipeline

Signed-off-by: Howard Pritchard <howardp@lanl.gov>

var/spack/repos/builtin/packages/libtheora/exit-prior-to-running-configure.patch

@@ -0,0 +1,23 @@
+From 0060fd48c12a59a080974ca3754bf0eab9ab6d35 Mon Sep 17 00:00:00 2001
+From: Howard Pritchard <howardp@lanl.gov>
+Date: Tue, 24 Nov 2020 15:14:41 -0700
+Subject: [PATCH] exit prior to running configure
+
+Signed-off-by: Howard Pritchard <howardp@lanl.gov>
+
+diff --git a/autogen.sh b/autogen.sh
+index bbca69dc..4de1e783 100755
+--- a/autogen.sh
++++ b/autogen.sh
+@@ -112,6 +112,8 @@ if test -z "$*"; then
+         echo "to pass any to it, please specify them on the $0 command line."
+ fi
+ 
++exit 0
++
+ echo "Generating configuration files for $package, please wait...."
+ 
+ echo "  $ACLOCAL $ACLOCAL_FLAGS"
+-- 
+2.18.2
+

var/spack/repos/builtin/packages/libtheora/package.py

@@ -22,6 +22,8 @@ class Libtheora(AutotoolsPackage):
     depends_on('doxygen',  type='build')
     depends_on('libogg')
 
+    patch('exit-prior-to-running-configure.patch', when='@1.1.1')
+
     def autoreconf(self, spec, prefix):
         sh = which('sh')
         if self.spec.satisfies('target=aarch64:'):