Reverting changes in jerry_Exit and adding comment about jerry_AssertFail call.
Reverting changes in jerry_Exit and adding comment about jerry_AssertFail call.

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