Using LP_SOLVE as solver with glpsol (experimental) also produce the
stated expected value for "min_bound = 1e-09":
glpsol --lpsolve -m test_1e_4_2.mod
GLPSOL: GLPK LP/MIP Solver, v4.65-ex, glp_double size 8
Parameter(s) specified in the command line:
--lpsolve -m test_1e_4_2.mod
Reading
Looking through the code I can see that it seems to be a mismatch in
checking for lower/upper bound in other places too (see bellow).
Also testing in AMPL it only returns 'x = 1' for 'min_bound = 1e-06',
and it works for 'min_bound = 1e-05' and return 'x = 1.1'.
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int
