Spack Infrastructure

Changes like below, but for all the recipes that specifically
mention "-lintl", because it breaks with system gettext().

I think one pull request with all N packages is appropriate(?)

diff --git a/var/spack/repos/builtin/packages/libxpm/package.py b/var/spack/repos/builtin/packages/libxpm/package.py
index 0e73980..372f8c2 100644
--- a/var/spack/repos/builtin/packages/libxpm/package.py
+++ b/var/spack/repos/builtin/packages/libxpm/package.py
@@ -30,6 +30,6 @@ def setup_build_environment(self, env):
         # If libxpm is installed as an external package, gettext won't
         # be available in the spec. See
         # https://github.com/spack/spack/issues/9149 for details.
-        if 'gettext' in self.spec:
-            env.append_flags('LDFLAGS', '-L{0} -lintl'.format(
-                self.spec['gettext'].prefix.lib))
+        if 'gettext' in self.spec and self.spec['gettext'].prefix != '/usr':
+               env.append_flags('LDFLAGS', '-L{0} -lintl'.format(
+                   self.spec['gettext'].prefix.lib))