Merge branch 'erp5-component' into erp5
Nginx: compile software with push stream module and add template and configuration to instantiate nginx

Pay attention, in this version there is no authentication and ssl.
version up: nginx 1.6.0
version up: nginx 1.7.2
nginx-push-stream: fix md5sum
version up : file-5.19.
version up : gmp-6.0.0a still keeping gmp-4 for gcc.
Merge remote-tracking branch 'origin/master' into erp5-component