limit some deps to build time

- this reduces the number of modules that have to be loaded at run time
  to run mochi services

packages/argobots/package.py

@@ -34,10 +34,10 @@ class Argobots(AutotoolsPackage):
     version('master', git='https://github.com/pmodels/argobots.git');
     version('dev-get-dev-basic', git='https://github.com/carns/argobots.git', branch='dev-get-dev-basic')
 
-    depends_on('m4')
-    depends_on('autoconf')
-    depends_on('automake')
-    depends_on('libtool')
+    depends_on('m4', type=("build"))
+    depends_on('autoconf', type=("build"))
+    depends_on('automake', type=("build"))
+    depends_on('libtool', type=("build"))
 
     def configure_args(self):
         args = ["--enable-perf-opt"]

packages/margo/package.py

@@ -34,9 +34,9 @@ class Margo(AutotoolsPackage):
     version('master', git='https://xgitlab.cels.anl.gov/sds/margo.git')
     depends_on('mercury', type=("build", "link", "run"))
     depends_on('argobots')
-    depends_on('autoconf@2.65:')
+    depends_on('autoconf@2.65:', type=("build"))
     depends_on('automake', type=("build"))
     depends_on('libtool', type=("build"))
     # 'timeout' is part of coreutils
     depends_on('coreutils')
-    depends_on('pkg-config')
+    depends_on('pkg-config', type=("build"))