Prerequisites preparation fix for behind firewall.
Prerequisites preparation fix for behind firewall.

JerryScript-DCO-1.0-Signed-off-by: SaeHie Park saehie.park@samsung.com

bsdelf/jerryscript,zherczeg/jerryscript,gabrielschulhof/jerryscript,LeeHayun/jerryscript,loki04/jerryscript,zherczeg/jerryscript,jack60504/jerryscript,LeeHayun/jerryscript,jerryscript-project/jerryscript,akosthekiss/jerryscript,slaff/jerryscript,dbatyai/jerryscript,dbatyai/jerryscript,yichoi/jerryscript,bzsolt/jerryscript,zherczeg/jerryscript,jack60504/jerryscript,slaff/jerryscript,loki04/jerryscript,LeeHayun/jerryscript,loki04/jerryscript,slaff/jerryscript,jack60504/jerryscript,gabrielschulhof/jerryscript,grgustaf/jerryscript,glistening/jerryscript,gabrielschulhof/jerryscript,glistening/jerryscript,LaszloLango/jerryscript,jerryscript-project/jerryscript,grgustaf/jerryscript,grgustaf/jerryscript,martijnthe/jerryscript,glistening/jerryscript,glistening/jerryscript,bsdelf/jerryscript,loki04/jerryscript,bsdelf/jerryscript,robertsipka/jerryscript,tilmannOSG/jerryscript,martijnthe/jerryscript,dbatyai/jerryscript,dbatyai/jerryscript,bzsolt/jerryscript,jack60504/jerryscript,slaff/jerryscript,robertsipka/jerryscript,LaszloLango/jerryscript,robertsipka/jerryscript,tilmannOSG/jerryscript,LaszloLango/jerryscript,akosthekiss/jerryscript,LeeHayun/jerryscript,slaff/jerryscript,martijnthe/jerryscript,LaszloLango/jerryscript,LaszloLango/jerryscript,yichoi/jerryscript,bsdelf/jerryscript,martijnthe/jerryscript,bzsolt/jerryscript,zherczeg/jerryscript,glistening/jerryscript,jack60504/jerryscript,martijnthe/jerryscript,martijnthe/jerryscript,grgustaf/jerryscript,bzsolt/jerryscript,jerryscript-project/jerryscript,bsdelf/jerryscript,yichoi/jerryscript,loki04/jerryscript,yichoi/jerryscript,gabrielschulhof/jerryscript,akosthekiss/jerryscript,jerryscript-project/jerryscript,tilmannOSG/jerryscript,jack60504/jerryscript,akosthekiss/jerryscript,robertsipka/jerryscript,grgustaf/jerryscript,gabrielschulhof/jerryscript,LeeHayun/jerryscript,zherczeg/jerryscript,jerryscript-project/jerryscript,yichoi/jerryscript,akosthekiss/jerryscript,loki04/jerryscript,tilmannOSG/jerryscript,robertsipka/jerryscript,dbatyai/jerryscript,glistening/jerryscript,bsdelf/jerryscript,tilmannOSG/jerryscript,robertsipka/jerryscript,grgustaf/jerryscript,bzsolt/jerryscript