"Bake" the values of PERL_REVISION, PERL_VERSION and PERL_SUBVERSION

"Bake" the values of PERL_REVISION, PERL_VERSION and PERL_SUBVERSION
into global variables (and hence a shared perl library). Additionally
under MULTIPLICITY record the size of the interpreter structure (total,
and for this version) and under PERL_GLOBAL_STRUCT the size of the
global variables structure. Coupled with PL_bincompat_options this will
allow 5.10.1 (and later), when compiled with a shared perl library, to
perform sanity checks in main()	to verify that the shared library is
indeed binary compatible.

p4raw-id: //depot/perl@32238