More fixes for revamped linux paffinity component:

* Enable VPATH builds to work (slight tweak of r14895 -- mainly
   because I already had it done when George committed :-) )
 * Enable "make dist" to work properly for PLPA included mode
 * Update plpa.h.in
 * Update svn:ignore

Took relevant changes back to the main PLPA SVN as well.

This commit was SVN r14896.

The following SVN revision numbers were found above:
  r14895 --> open-mpi/ompi@bb7b04e875

opal/mca/paffinity/linux/Makefile.am

@@ -19,6 +19,9 @@
 
 SUBDIRS = plpa
 
+# To find plpa_bottom.h
+AM_CPPFLAGS = -I$(top_srcdir)/opal/mca/paffinity/linux/plpa/src/libplpa
+
 sources = \
         paffinity_linux.h \
         paffinity_linux_component.c \
@@ -28,8 +31,6 @@ sources = \
 # mca_<type>_<name>.la (for DSO builds) or libmca_<type>_<name>.la
 # (for static builds).
 
-AM_CPPFLAGS = -I$(top_srcdir)/opal/mca/paffinity/linux/plpa/src/libplpa
-
 if OMPI_BUILD_paffinity_linux_DSO
 component_noinst =
 component_install = mca_paffinity_linux.la

opal/mca/paffinity/linux/plpa/Makefile.am

@@ -15,5 +15,7 @@ SUBDIRS = src
 DIST_SUBDIRS = config $(SUBDIRS)
 EXTRA_DIST = README VERSION LICENSE AUTHORS
 
+if PLPA_BUILD_STANDALONE
 dist-hook:
 	csh "$(top_srcdir)/config/distscript.csh" "$(top_srcdir)" "$(distdir)" "$(PLPA_VERSION)" "$(PLPA_SVN_R)"
+endif

opal/mca/paffinity/linux/plpa/config/plpa.m4

@@ -264,9 +264,10 @@ AC_DEFUN([_PLPA_INIT],[
     # If we're building executables, we need some things for plpa-taskset
     if test "$plpa_executables" = "yes"; then
         AC_C_INLINE
+    fi
+    # Always need these for make dist (both included and standalone)
     AM_PROG_LEX
     AC_PROG_YACC
-    fi
 
     # Success
     $1

opal/mca/paffinity/linux/plpa/src/libplpa/plpa.h.in

@@ -48,6 +48,10 @@
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H
 
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+#undef LT_OBJDIR
+
 /* Define to 1 if your C compiler doesn't accept -c and -o together. */
 #undef NO_MINUS_C_MINUS_O
 
@@ -91,6 +95,12 @@
    `char[]'. */
 #undef YYTEXT_POINTER
 
+/* Emulated value */
+#undef __NR_sched_getaffinity
+
+/* Emulated value */
+#undef __NR_sched_setaffinity
+
 /* Define to `__inline__' or `__inline' if that's what the C compiler
    calls it, or to nothing if 'inline' is not supported under any name.  */
 #ifndef __cplusplus