Board XH-M194 with RTC, improved \res and RAM address export

fixes #200 res supports multiple symbols

fixes #192 Export arbitrary RAM locations as constants

issue #128: initial commit for XH-M194 7S-LED, keys, outputs
fixes #128 XH-M194 w/ DS1302 RTC
fixes #128 switch serial console and clock colon dots
fixes #128 RTC burst-mode

fixed #189 Enable UART simulation on Port E

fixes #185 EVALUATE honors COMPILE mode

fixes #194 Improve behavior of serial interface w/ shared LED-Displa…