Fixes #4091: Move r30245 to v1.7 branch (add libmpi to libmpi_usempif08_libadd)

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r30245 [[BR]]
Similar to r30244, make the libmpi_usempif08 Fortran library also
LIBADD libmpi.la

cmr=v1.7.4:reviewer=brbarret:subject=Add libmpi to libmpi_usempif08_LIBADD
Fixes #4097: Move r30264 to v1.7 branch (fix communicator double-free from pt2pt)

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r30264 [[BR]]
fix communicator double-free from pt2pt component, caused by r29938.

cmr=v1.7.5:reviewer=brbarret
Fixes #4099: Move r30266 to v1.7 branch (always add -g for symbols)

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r30266 [[BR]]
always add -g for symbols
cmr=v1.7.4:reviewer=ompi-rm1.7