Makefile: fix git dep for multiple remotes
configure: backup prev. config.inc, take args
p2 cmt: add frontend TODOs
Merge remote-tracking branch 'origin/master' into p2
mv greg from tools/ to syn/

Now do not clean syn/*.c
simplify print+\n to potion_p (i.e. p2_say)
JIT vs JIT_TARGET: POTION_JIT defines only the default, POTION_JIT_TARGET if compiled in

Seperate POTION_JIT from POTION_JIT_TARGET.
POTION_JIT_TARGET defines if the jit vm is compiled in and supported
POTION_JIT defines if jit is the default.

Fix the cmdline and logic accordingly.
fix sed rule for bsd sed, add more bsd instructions
ws: test/api/CuTest.c identation
Merge remote-tracking branch 'origin/master' into p2
p2 -v: print jit=0/x86 with new POTION_JIT_NAME
.gitignore: mv tools/greg => syn/greg
Merge branch 'p2' of git://github.com/perl11/potion into p2