Makefile.am: change subdirs order

Makefile.am

@@ -20,6 +20,10 @@ CLEANFILES = *.gcno *.gcda *.linkinfo
 SUBDIRS = src
 SUBDIRS += tools tests doc
 
+if BUILD_EXAMPLES
+SUBDIRS += examples
+endif
+
 if USE_MPI
 SUBDIRS += mpi
 endif
@@ -28,10 +32,6 @@ if BUILD_SOCL
 SUBDIRS += socl
 endif
 
-if BUILD_EXAMPLES
-SUBDIRS += examples
-endif
-
 if BUILD_GCC_PLUGIN
 SUBDIRS += gcc-plugin
 endif