[EXPORT][NUCLEO_F334R8] export to gcc_arm and coide 

- exporter to gcc_arm and coide
- rtos library is not working because of double defined SysTick_Handler in system_stm32f3xx.c and in rtos
- that's why the two new generated projects by export_test.py has to be changed manually (remove rtos library, change main e.g. to blinky example)
- please see pullrequest #526 for a correct export
- tests with "peripherals": ["digital_loop"] are going through:

Test summary:

+--------+---------------+-----------+-----------+---------------------------------------+--------------------+---------------+-------+
| Result | Target        | Toolchain | Test ID   | Test Description | Elapsed Time (sec) | Timeout (sec) | Loops |
+--------+---------------+-----------+-----------+---------------------------------------+--------------------+---------------+-------+
| OK     | NUCLEO_F334R8 | GCC_ARM   | DTCT_1      | Simple detect test   |  0.44     |       10      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | EXAMPLE_1| /dev/null                 | 3.37      |       10      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_10   | Hello World             |   0.37    |       10      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_11   | Ticker Int                 |  11.31   |       20      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_12   | C++                         |   1.32    |       10      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_16   | RTC                        |   4.7      |       15      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_2     | stdio                        |   0.76    |       20      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_23   | Ticker Int us            |  11.37   |       15      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_24   | Timeout Int us         |  11.41   |       15      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_25   | Time us                   |  11.31   |       15      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_26   | Integer constant division|1.32|       10      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_A1   | Basic                      |    1.32   |       10      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_A21| Call function before main (mbed_main)|1.31|10|1/1 |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_A5   | DigitalIn DigitalOut |   1.31    |       10      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_A6   | DigitalInOut            |  1.31     |       10      |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_A7   | InterruptIn              |   9.31     |      10       |  1/1  |
| OK     | NUCLEO_F334R8 | GCC_ARM   | MBED_A9   | Serial Echo at 115200 | 5.97 |      10       |  1/1  |
+--------+---------------+-----------+-----------+---------------------------------------+--------------------+---------------+-------+
Result: 17 OK

Completed in 125.02 sec