Skip tests that rely on the `amhello' tarball that comes with Automake.
That tarball's `configure' uses #!/bin/sh, but we can't easily patch it.

diff --git a/t/amhello-binpkg.sh b/t/amhello-binpkg.sh
index fa88cc6..d988cee 100755
--- a/t/amhello-binpkg.sh
+++ b/t/amhello-binpkg.sh
@@ -17,6 +17,7 @@
 # Test an example from the manual about the 'amhello' package:
 # using DESTDIR to build simple, no-frills binary packages.
 
+exit 77
 am_create_testdir=empty
 . ./defs || exit 1
 
diff --git a/t/amhello-cflags.sh b/t/amhello-cflags.sh
index 666011f..2a95e3c 100755
--- a/t/amhello-cflags.sh
+++ b/t/amhello-cflags.sh
@@ -18,6 +18,7 @@
 # using VPATH builds to configure the same package with different
 # options.
 
+exit 77
 am_create_testdir=empty
 required=gcc
 . ./defs || exit 1
diff --git a/t/amhello-cross-compile.sh b/t/amhello-cross-compile.sh
index 708abda..2ee4292 100755
--- a/t/amhello-cross-compile.sh
+++ b/t/amhello-cross-compile.sh
@@ -17,6 +17,7 @@
 # Test an example from the manual about the 'amhello' package:
 # cross-compiling a package from Linux/Unix to MinGW.
 
+exit 77
 am_create_testdir=empty
 required=i586-mingw32msvc-gcc
 . ./defs || exit 1
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<div class='path'>path: <a href='/guix/log/?id=d3e12a02d3d682d954561de080401dfdd46ddee1&amp;showmsg=1'>root</a>/<a href='/guix/log/tests?id=d3e12a02d3d682d954561de080401dfdd46ddee1&amp;showmsg=1'>tests</a>/<a href='/guix/log/tests/guix-pack-localstatedir.sh?id=d3e12a02d3d682d954561de080401dfdd46ddee1&amp;showmsg=1'>guix-pack-localstatedir.sh</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/guix-pack-localstatedir.sh?id=d3e12a02d3d682d954561de080401dfdd46ddee1'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2019-05-18 12:23:31 +0200'>2019-05-18</span></td><td class='logsubject'><a href='/guix/commit/tests/guix-pack-localstatedir.sh?id=baab87ac49e3f0f873e17eb16db9781189b1f2d1'>pack: '--localstatedir' and '-R' tests gracefully handle missing /gnu/store.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
Fixes &lt;https://bugs.gnu.org/35776&gt;.
Reported by Ting-Wei Lan &lt;lantw44@gmail.com&gt;.

* tests/guix-pack-localstatedir.sh: Set 'storedir' before
'NIX_STORE_DIR'.
* tests/guix-pack-relocatable.sh: Likewise.


</td></tr>
<tr class='logheader'><td><span title='2018-11-23 15:42:01 +0100'>2018-11-23</span></td><td class='logsubject'><a href='/guix/commit/tests/guix-pack-localstatedir.sh?id=08f410834bffbe1e55633a0a4c87caba69d7fa92'>pack: Add '--profile-name'.</a></td><td>Ludovic Courtès</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* guix/scripts/pack.scm (self-contained-tarball): Add #:profile-name and
honor it.
(squashfs-image, docker-image): Add #:profile-name.
(%default-options): Add 'profile-name'.
(%options, show-help): Add "--profile-name".
(guix-pack): Honor it.
* tests/guix-pack-localstatedir.sh: New file.
* Makefile.am (SH_TESTS): Add it.
* doc/guix.texi (Invoking guix pack): Document "--profile-name".


</td></tr>