whitespace fixes
fix bindbackend build with new automake versions

  new automake versions generate .hh from .yy with yacc,
  older versions generate .h

  copy the .hh -> .h rule from pdns/Makefile.am
fix bindparser reduce conflicts

resolve reduce conflicts to what yacc defaulted to:

  * 'root_command' included 'command' directly and through
    'options_command' and 'zone_command'; separate option/zone commands
    for global usage, which don't include 'command' anymore.
  * 'command' included 'also_notify' and 'zone_also_notify'; yacc resolved
    conflict by defaulting to 'also_notify'; removed 'zone_also_notify'
    from global zone commands.
fix RETVAL for 'both' tests
don't overwrite first RETVAL in second run
docs are read only
fix parameter parsing in yahttp
validate webserver parameters
also add bindparser.h to bindbackend BUILT_SOURCES
Merge pull request #1113 from mind04/yahttp

yahttp parameter fix and webserver input validation
Merge pull request #1110 from mind04/whitespace

whitespace and 'both' tests