Copy and split out the analyzing code (formerly the '-f' flag) into a new file.
Remove file-analyzing code ('-f' flag) from the dcf77pi.c,
this file will become the live ncurses client.
Add dcf77pi-analyze to the build, first cut at moving functionaly to libdcf77.so
Rename 'libdcf77' target to 'libdcf77.so' so that it is only build once,
and let it depend on its header files.