jSerialComm v2.5.3

• Add function calls to get RTS/DTR/RI line statuses (getRTS(), getDTR(), getRI())
• Add functions to attempt to set/retrieve the underlying device driver's transmit buffer sizes
• Suppress output of setting RTS/DTR line states before a port is opened
• Set global read/write/execute permissions on extracted native libraries so multiple instances of jSerialComm can function at the same time
• Tie all "safety sleep" timers to the parameter in openPort() so that every sleep is user-configurable at runtime
• Ensure that ports are fully/automatically closed if it is detected that they are no longer connected
• Check for open ports before reading/writing so that disconnected ports don't continually spit out garbage data
• Properly initialize all C data structs