crc16_ccitt.h - made crc table static class member.
crc16_ccitt.h - made crc table static class member.

Made crc table static class member. This is done to prevent
appearance of multiple crc table instances in executable file.
Also put Crc16CcittCalculator in STM32TPL namespace.

antongus/stm32tpl,antongus/stm32tpl