Avoid "&&" in windows-makefile.tmpl

Avoid "&&" in windows-makefile.tmpl

The `make.exe` utility shipped with Embarcadero C++Builder has a special
meaning for the [`&&` operator in commands][1]. This meaning is retained
even in Microsoft NMake compatibility mode (`make -N`). Split all
commands using this shell (`cmd.exe`) operator into two commands.

[1]: http://docwiki.embarcadero.com/RADStudio/Sydney/en/MAKE_Rules_(Explicit_and_Implicit)_and_Commands#MAKE_Command_Operators

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/13540)