Remove Setlocalversion

Remove setlocalversion and added in the string MODVERSION for
manual incrementing.

Signed-off-by: Ryan Blakley <ryanblakley24@gmail.com>
Change to -O3 CFLAGS

Change the CFLAGS from -O2 to -O3 to see if it increases performance,
I've read it's probably a placebo but we will see.

Signed-off-by: Ryan Blakley <ryanblakley24@gmail.com>