some AM_INIT_AUTOMAKE invocations were missing subdir-objects

automake-1.14 will carp if the subdir-objects option is missing and it thinks
you should have specified this option, and since we treat warnings as errors we
need to specify this option.  MPICH requires a pretty new version of automake,
so it's doubtful we'll ever encounter the 1999-era automake that does not
understand 'subdir-objects'

src/armci/configure.ac

@@ -7,7 +7,7 @@ AC_PREREQ(2.62)
 AC_INIT([armci],[0])
 AC_CONFIG_AUX_DIR(m4)
 AC_CONFIG_MACRO_DIR(m4)
-AM_INIT_AUTOMAKE([-Wall -Werror -Wno-portability-recursive foreign 1.12.3 color-tests parallel-tests])
+AM_INIT_AUTOMAKE([-Wall -Werror -Wno-portability-recursive foreign 1.12.3 color-tests parallel-tests subdir-objects])
 
 LT_PREREQ([2.2.6])
 

src/mpl/configure.ac

@@ -11,7 +11,7 @@ AC_CONFIG_SRCDIR([src/mplstr.c])
 
 AC_CONFIG_AUX_DIR(confdb)
 AC_CONFIG_MACRO_DIR(confdb)
-AM_INIT_AUTOMAKE([-Wall -Werror foreign 1.12.3])
+AM_INIT_AUTOMAKE([subdir-objects] [-Wall -Werror foreign 1.12.3])
 
 dnl must come before LT_INIT, which AC_REQUIREs AC_PROG_CC
 PAC_PROG_CC

src/openpa/configure.ac

@@ -12,7 +12,7 @@ dnl config.guess.  It also contains autoconf macro files.
 AC_CONFIG_AUX_DIR(confdb)
 AC_CONFIG_MACRO_DIR([confdb])
 
-AM_INIT_AUTOMAKE([-Wall -Werror foreign color-tests 1.12.3])
+AM_INIT_AUTOMAKE([-Wall -Werror foreign color-tests 1.12.3 subdir-objects])
 
 # automake 1.12 seems to require this, but automake 1.11 doesn't recognize it
 # must come before LT_INIT

src/pm/hydra/configure.ac

@@ -32,7 +32,7 @@ AS_CASE([$host],
 )
 
 
-AM_INIT_AUTOMAKE([-Wall -Werror foreign 1.12.3])
+AM_INIT_AUTOMAKE([-Wall -Werror foreign 1.12.3 subdir-objects])
 
 AM_PROG_AR