Added MBED_24 host test automation for timeout with us int handleers (2 x 500us tandem)
trailing spaces removed
add errors in case some target defines were not set properly
Merge pull request #222 from mazgch/master

add errors in case some target defines were not set properly
Added MBED_16 RTC host test automation (5 reads from RTC)
Added MBED_16 RTC host test automation (5 reads from RTC)
This small fix will omit TargetID printed on composite serial by some targets like LPC11U24