ssl & orber: Remove ssl:pid/1 (has been pointless since R14)
Fix some FOP warnings

Examples overflowing the width of PDF pages have been fixed.

The remaining warnings are due to table cells, and require more
work.
Implement ./otp_build configure --enable-silent-rules

With silent rules, the output of make is less verbose and compilation
warnings are easier to spot. Silent rules are disabled by default and
can be disabled or enabled at will by make V=0 and make V=1.
Remove what remains of the Mnemosyne code
Merge branch 'nox/enable-silent-rules/OTP-10726'

* nox/enable-silent-rules/OTP-10726:
  Implement ./otp_build configure --enable-silent-rules
Merge branch 'lh/forget-mnemosyne/OTP-10729'

* lh/forget-mnemosyne/OTP-10729:
  Remove what remains of the Mnemosyne code
  Remove support for the query keyword and query expressions
Update copyright years
Prepare release