[Gm2] latest cvs changes

[Gaius Mulley]

Hi,

in summary, more fixes to the builtin procedure function CMPLX and
also an additional test in configure/configure.in to catch the absence
of 'flex', also a number of additional regression tests to test CMPLX
have been added.

regards,
Gaius


   * gm2/configure.in:  corrected version to 0.68
   * gm2/gccgm2.c:  added prototypes for gccgm2_BuildCmplx,
     gccgm2_BuildIm and gccgm2_BuildRe.  gccgm2_BuildCmplx
     detect constant operands or variable operands and skip
     type decl.
   * gm2/gm2-compiler/M2Base.mod:  ScalarToComplex
     return Complex even if error discovered.
   * gm2/gm2-compiler/M2Quads.mod:  check compatibility of
     CMPLX operands and assign return value type for
     CMPLX based on the operand types rather than CType.
   * gm2/configure.in:  added rule to detect the presence of
     flex.
   * gm2/gccgm2.c:  gccgm2_BuildComplex test and convert
     operands if necessary.