try to isolate uptage bug

A lot of working done to understand problem of fba uptake greater than substrate!
It semms that fba lower bounds is not correct set or ignored
not solved but some usefull debug.

t(spos)
     acetate aketoglutarate co2 etanol formiate fumarate glucose h2o   proton lactate o2 iphosphate pyruvate
     [1,] 54.57   70             70  123.2  0        107.6    3.68    32.48 234.2  70      0  51.03      70
          succinate h2 methanol methane ethanol
          [1,] 70        70 70       70      0

print(fba(spos, sbml$stoch, sbml$ex, sbml$reac, bac[l,][1,4], sub_ex, "ecoli"))

R_ETOHt2r                     R_EX_ac_e_                    R_EX_akg_e
-133.5292                       132.7332                         0.0000
R_EX_co2_e_                   R_EX_etoh_e_                    R_EX_for_e_
0.0000                       133.5292                       269.5873
R_EX_fum_e_                    R_EX_glc_e_                    R_EX_h2o_e_
0.0000                      -141.4428                      -123.2134
R_EX_h_e_                  R_EX_lac_D_e_                     R_EX_o2_e_
405.5789                         0.0000                         0.0000
R_EX_pi_e_                    R_EX_pyr_e_                   R_EX_succ_e_
-12.3360                         0.0000                         0.0000