Bug-Fix-Release: 0.9.1

This release fixes a number of bugs that could cause crashes at output time.

1.) Several output-quantity codes were double-booked. This could cause issues with quantity codes in the following ranges:
1900--2000 (kinetic energy equation codes)
1400--1600 (thermal energy equation codes)
1600--1800 (magnetic energy equation codes)

The output quantity tables have been adjust accordingly.

2.) Logical errors affecting outputs involving v' dot grad v' have been corrected.

3.) The configure script now accepts the --with-custom and -devel flags (run ./configure --help for details)