Changed default gcc optimization level to be inline with the CMake release build default. Removed putchar library dependency for MSP430.
Changed default gcc optimization level to be inline with the CMake release build default. Removed putchar library dependency for MSP430.

Psykar/kubos,kubostech/KubOS,Psykar/kubos,Psykar/kubos,Psykar/kubos,kubostech/KubOS,Psykar/kubos,Psykar/kubos,Psykar/kubos