Allow --help also.
Print the used perl and archname. A wrong perl is very often the cause of problems

Conflicts:
	script/perlcc.PL
C: add PerlIO_cleanup for layers

part of issue #118: move -fno-walkall from -O3 to -O4, fixed testc 91
commit e7e366a75998dac8ae58b393b74
test 95: fix for new SSL_verify_mode warning

use excplicit SSL_verify_mode =>0 option
disable test for t/issue96.t: defined &gv optimization temp. disabled

Using the op defined &gv currently does store the gv->CV