anchor.diff:  Build `\{pkg}` reflects the particular component, either
   the offical designation (`httpd-2.4.25/`), an indication
   of interim packages (`httpd-2.4.26-rc1/`), or the exact
  -province of the file (`httpd-2.4.26-dev-r1872199/`).
  +provinance of the file (`httpd-2.4.26-dev-r1872199/`).
   
   Several `\{bld}` schemas are expected; 'release' for the
   official packages, 'candidate' for packages anticipated
  
positive.code:      libjansson-dev \
       libpcre3-dev \
       libxml2-dev \
       lua5.3 \
       zlib1g-dev
  
  Perl is used by the openssl documentation schema (Text::Template)
  
negative.code: 
   $ mkdir -p /opt/pivotal/webserver
   $ cd /opt/pivotal/webserver
   $ tar -xjvf {pkgname}
   $ ./httpd-2.4.29\{tag}/bin/fixrootpath.pl
   $ ln -sf httpd-2.4.29\{tag} httpd-2.4
  
  