Makefile: do not put man pages in the manpages subdirectory

this puts the resulting man pages in the current directory
manpages: add man pages in xml format
manpages: add Makefile to generate man pages from xml files
manpages: update all man pages from xml files
Update manpages in .gitignore
Merge branch 'manpages'

* manpages:
  Update manpages in .gitignore
  manpages: update all man pages from xml files
  manpages: add Makefile to generate man pages from xml files
  manpages: add man pages in xml format
  Makefile: do not put man pages in the manpages subdirectory