plug some memory leaks * oct-parse.yy, parse.h (cleanup_statement_list): New function. * toplev.cc (main_loop): Put cleanup_statement_list on the unwind_protect stack to delete the command list created by the parser instead of deleting it directly. * oct-parse.yy (parse_fcn_file, eval_string): Likewise. * input.cc (get_debug_input): Likewise. * pt-loop.cc (tree_simple_for_command::~tree_simple_for_command, tree_complex_for_command::~tree_complex_for_command): Also delete lhs expression. * pt-idx.cc (tree_index_expression::~tree_index_expression): Also delete contents of dyn_field list.

      SUBROUTINE ZSHCH(ZR, ZI, CSHR, CSHI, CCHR, CCHI)
C***BEGIN PROLOGUE  ZSHCH
C***REFER TO  ZBESK,ZBESH
C
C     ZSHCH COMPUTES THE COMPLEX HYPERBOLIC FUNCTIONS CSH=SINH(X+I*Y)
C     AND CCH=COSH(X+I*Y), WHERE I**2=-1.
C
C***ROUTINES CALLED  (NONE)
C***END PROLOGUE  ZSHCH
C
      DOUBLE PRECISION CCHI, CCHR, CH, CN, CSHI, CSHR, SH, SN, ZI, ZR,
     * DCOSH, DSINH
      SH = DSINH(ZR)
      CH = DCOSH(ZR)
      SN = DSIN(ZI)
      CN = DCOS(ZI)
      CSHR = SH*CN
      CSHI = CH*SN
      CCHR = CH*CN
      CCHI = SH*SN
      RETURN
      END