debug: add debug classes (unfinished)
fib.pn: different lines for -d
more nbody.pl fixes
fix build error: variable 'code' is used uninitialized

travis
p2: enable debugger also

missing end-of-line
missing EXEC_DEBUG check
add prelim DEBUG_IN_C help
better example/fib.p2
better example/fib.p2: say join
revert part of p2 debugger fix: DBG_Pvi == v OR i, not both
debug: do not :c on unknown commands

stay in loop
allow : and . within names (msg)

but not at the bginning and not at the end
fix example/fib.p2 recursion logic
Merge branch 'modulenames' into p2
debug: store src lines along ast

enable line-stepping, with visible line buffer in
readline default debugger
debuglines: store only with -d
p2: fix x86 jit for falseness tests

also check for PN_ZERO (0) and PN_STR0 ("") to be FALSE
p2 expr: remove the compiler expr list special case

fix calllist to omit the expr from opexpr. now its 1:1
identical to potion
fix potion 'yycontextline' defined but not used [-Werror=unused-function]

if DEBUG=0
also reorder p2 x86 jit for test, first false, then 0, then ""
p2 opexpr: no tuple

fixes 1+1*2 like expressions
example/fib.p2: still problems with <1 cmp

jit doesnt work yet, still
p2 syntax: add postfix if and unless

warn about nyi forlist