Log Message:
Changes 4.53:
* The API routine glp_read_mps was changed to remove free rows.
* A bug was fixed in the API routine glp_read_lp.
* The zlib compression library used by some GLPK routines and
  included in the package was downgraded from 1.2.7 to 1.2.5 (as
  in GLPK 4.50) because of addressability bugs on some 64-bit
  platforms.
* A bug was fixed in a routine that reads gzipped files.
* Two API routines glp_get_it_cnt and glp_set_it_cnt were added.
* All obsolete GLPK API routines (prefixed with lpx) were removed
  from the package.
* A set of routines that simulate the old GLPK API (as defined
  in 4.48) were added; see examples/oldapi/api/lpx.c.
* A namespace bug was fixed in the SQL table drive module.