changes to make pp3 user friendly, robust and less segfault

[cjacker]

These changs include:

• add pic16(l)f1823 to device database and verified.
• add a help msg
• add some check to ensure user set up args correctly (at least, '-c' and '-t' are essential args ) and less segfault
• set a proper init value of sleep time to avoid some 'rx fail' issue.
• add pp3 makefile for linux and support install it globally.

I try to keep same code-style, but suggest a re-construction of pp3 codes :-)