Adding new configure flag --enable-all-static.

This passes -all-static to the --mode=link invocations
of libtool and is required on the BG/Q system Mira to
force static linking.

Updating all Makefiles to set AM_LDFLAGS = $(libmesh_LDFLAGS).
Automake junk updated by bootstrap.
Merge pull request #135 from libMesh/all_static

Patches adding new configure option --enable-all-static