[DOCS] 8.1 PDF Documentation.

I've built the PDF docs for the past two releases, but my recent attempts to build the 8.1 docs have failed. I previously used Jade 1.2.1, SP 1.3.4, and docbook-dsssl 1.76, but trying that now results in: ! pdfTeX error (ext4): \pdfendlink ended up in different nesting level than \pdfstartl

[DOCS] Partitioning docs RFC

RFC: In 5.9.2. ("Implementing Partitioning") -> step 5), add examples of update+delete rules/triggers ( please? :) ) - Mikael ---(end of broadcast)--- TIP 2: Don't 'kill -9' the postmaster