- Use distribution CFLAGS

- Update to release 1.12
* A '+' alone (without line number) before a file name in the
command line puts the cursor at end-of-buffer.
* In case of error in an argument to a command line option, moe
now shows the name of the option as parsed from the command
line.
* The new command 'C-o b' (reformat paragraphs in block) has
been added.
* Moe now centers the cursor the first time each handle is
displayed.
* 'F2' (save) now can write an unnamed read-only buffer to a
file without setting the buffer name.
* 'undo' and 'redo' now show feedback ("undoing...",
"redoing...").
* The UTF-8 decoder now converts some more characters ('numero
sign', 'arrow with tip', 'double arrow', 'Kelvin sign',
'Angstrom sign').