#23 Leading FFs for byte/word registers when msb set to 1

[Tomas Zvarik]

Embsysreg view displays leading FFs for byte/word registers when the msb(most significant bit) is set to true. Or in other words if the sign bit is on. For example byte register with value 0x80 is displayed as 4B register with content 0xFFFFFF80. Word register with value 0x8000 is displayed as 0xFFFF8000. Problem that the method Utils#makeUnsigned is always invoked with the bit-depth of 32 bit from the method readMemory of the GDBSessionTranslator class. Perhaps the bith depth should be set according to register size which is input parameter for the readMemory method.