build and send an adaptmesh instruction to FreeFem
ff_adaptmesh(str,hmin,hmax,err,errg,nbvx,nbsmooth,nbjacoby,ratio,omega,iso,abserror,cutoff,verbosity,inquire,splitpbedge,maxsubdiv,anisomax,rescaling)
a string the "base" of adaptmesh syntax
parameter_sequence: a sequence of instructions of the form name=value where name can be:
See FreeFem documentation for more details.