continue search sorted openib device list if no btls found with nearest HCA.

cmr=v1.7.4:reviewer=jladd
fix the streams used in opal_output in the sharedfp components.
Add option to disable building the OSHMEM interface.  This isn't perfect, but should work for the v1.7 timeframe
Changes to VT/OTF:
Fixed warnings about the need of the 'subdir-objects' option when using Automake v1.14.
Due to a bug in Automake (see http://debbugs.gnu.org/cgi/bugreport.cgi?bug=13928) the 'subdir-objects' option cannot be enabled.
To get around this problem external sources files are sym linked in the current build directory (as done in ompi/mpi/c/profile) to lead Automake to believe that all source files are in the same directory.
add support for --without-oshmem in configure
Corrected svn:ignores
fix AUTHORS with new developer
cmr=v1.7.4:reviewer=ompi-rm1.7
Fix an error message for the igather and the usage of the extent on
non non-root processes for the iscatter. Thanks to Pierre
Jolivet for the bug report and the patch.