Date-related test failures on arm/linux

[akosthekiss]

On current master (5d3aa98), arm/linux target fails on 5 date-related tests. Details below.

I've been building jerry on Ubuntu 14.04.3 LTS x86_64 GNU/Linux 3.13.0 with cross toolchain arm-linux-gnueabihf-gcc 4.8.2, and testing it with qemu user space emulation as follows:

TOOLCHAIN=build/configs/toolchain_linux_armv7l-hf.cmake TIMEOUT=300 make NINJA=1 test-js.debug.linux.j

5 tests in the suite fail (all seem to be date-related):

[32/259] /home/akiss/devel/jerry/jerryscript/build/bin/debug.linux/jerry  /home/akiss/devel/jerry/jerryscript/tests/jerry/date-annexb.js: FAIL (1)
Script assertion failed
[33/259] /home/akiss/devel/jerry/jerryscript/build/bin/debug.linux/jerry  /home/akiss/devel/jerry/jerryscript/tests/jerry/date-construct.js: FAIL (1)
Script assertion failed
[34/259] /home/akiss/devel/jerry/jerryscript/build/bin/debug.linux/jerry  /home/akiss/devel/jerry/jerryscript/tests/jerry/date-getters.js: FAIL (1)
Script assertion failed
[36/259] /home/akiss/devel/jerry/jerryscript/build/bin/debug.linux/jerry  /home/akiss/devel/jerry/jerryscript/tests/jerry/date-setters.js: FAIL (1)
Script assertion failed
[37/259] /home/akiss/devel/jerry/jerryscript/build/bin/debug.linux/jerry  /home/akiss/devel/jerry/jerryscript/tests/jerry/date-tostring.js: FAIL (1)
Script assertion failed

To reproduce the above failures, the installation of some packages (cross-gcc and qemu) may be needed:

sudo apt-get install gcc-arm-linux-gnueabihf libc6-dev-armhf-cross qemu-user-static

The failures are blocking #898