groonga-httpd windows: force to disable PCRE and zlib with MinGW build
groonga-httpd windows: force to disable PCRE and zlib with MinGW build

Because nginx doesn't support cross-compile of them.

naoa/groonga,kenhys/groonga,cosmo0920/groonga,naoa/groonga,groonga/groonga,cosmo0920/groonga,redfigure/groonga,komainu8/groonga,redfigure/groonga,redfigure/groonga,naoa/groonga,groonga/groonga,redfigure/groonga,komainu8/groonga,redfigure/groonga,cosmo0920/groonga,komainu8/groonga,kenhys/groonga,hiroyuki-sato/groonga,kenhys/groonga,groonga/groonga,groonga/groonga,groonga/groonga,naoa/groonga,redfigure/groonga,kenhys/groonga,hiroyuki-sato/groonga,naoa/groonga,naoa/groonga,komainu8/groonga,cosmo0920/groonga,groonga/groonga,redfigure/groonga,kenhys/groonga,hiroyuki-sato/groonga,kenhys/groonga,cosmo0920/groonga,kenhys/groonga,hiroyuki-sato/groonga,komainu8/groonga,hiroyuki-sato/groonga,groonga/groonga,komainu8/groonga,hiroyuki-sato/groonga,cosmo0920/groonga,naoa/groonga,groonga/groonga,naoa/groonga,komainu8/groonga,redfigure/groonga,hiroyuki-sato/groonga,hiroyuki-sato/groonga,cosmo0920/groonga,cosmo0920/groonga,kenhys/groonga,komainu8/groonga