Improve the heap limit measure tool (#2092)
Improve the heap limit measure tool (#2092)

Changes:
 * Added support for Python3
 * Suppressed the build output text
 * Code cleanup
 * Fixed pylint warnings

JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.u-szeged@partner.samsung.com
grgustaf/jerryscript,LaszloLango/jerryscript,gabrielschulhof/jerryscript,robertsipka/jerryscript,yichoi/jerryscript,yichoi/jerryscript,grgustaf/jerryscript,glistening/jerryscript,gabrielschulhof/jerryscript,bsdelf/jerryscript,bsdelf/jerryscript,glistening/jerryscript,akosthekiss/jerryscript,gabrielschulhof/jerryscript,LaszloLango/jerryscript,akosthekiss/jerryscript,zherczeg/jerryscript,LaszloLango/jerryscript,bzsolt/jerryscript,zherczeg/jerryscript,gabrielschulhof/jerryscript,LaszloLango/jerryscript,dbatyai/jerryscript,zherczeg/jerryscript,jerryscript-project/jerryscript,bzsolt/jerryscript,akosthekiss/jerryscript,glistening/jerryscript,bzsolt/jerryscript,glistening/jerryscript,grgustaf/jerryscript,bsdelf/jerryscript,bzsolt/jerryscript,dbatyai/jerryscript,robertsipka/jerryscript,zherczeg/jerryscript,bsdelf/jerryscript,yichoi/jerryscript,dbatyai/jerryscript,glistening/jerryscript,robertsipka/jerryscript,robertsipka/jerryscript,robertsipka/jerryscript,bzsolt/jerryscript,grgustaf/jerryscript,bsdelf/jerryscript,dbatyai/jerryscript,jerryscript-project/jerryscript,grgustaf/jerryscript,yichoi/jerryscript,gabrielschulhof/jerryscript,yichoi/jerryscript,grgustaf/jerryscript,jerryscript-project/jerryscript,akosthekiss/jerryscript,LaszloLango/jerryscript,jerryscript-project/jerryscript,glistening/jerryscript,akosthekiss/jerryscript,dbatyai/jerryscript,bsdelf/jerryscript,jerryscript-project/jerryscript,robertsipka/jerryscript,zherczeg/jerryscript