Add more signal code definitions
Add more signal handlers
Fix concreteness test for the reprconv.

This also closes #128, but now for the JIT.
Document bytecode directory environment flag
Fix handling of command line args on Win32.

We previously didn't handle encoding of them correctly. This improves
things sufficiently that one of the two failing tests in dash-e.t now
passes.
Made function out of savecapture
JIT savecapture and usecapture
return str_consts.empty directly
fix alignment
Added MVM_calloc function
Add src/core/alloc.h to Makefile and fix build
s/calloc/MVM_calloc/g
remove a obsolete comment
Add getobjsc.

This causes two spectest failures
* S06-operator-overloading/sub.rakudo.moar
* S17-procasync/print.rakudo.moar
So this is pushed into a separate branch until further notice.
s/jl/jle/
Merge remote-tracking branch 'origin/jit-getobjsc'
JIT sin, cos, tan, asin, acos, atan
write "leaving" when leaving an inlined frame

rather than "entering" twice.
jit atan2_n, time_n and nativecallinvoke
Add missing MVMROOT