initial implementation of call overloading: f(x...) gets turned into call(f, x...) as a fallback (if f is not a function); to do: update inference, fallback to call when f is a type
make sure call passes through keywords
fix call overloading for type constructors, add some tests
support generic call in apply(f, ...)
(broken) patch to eliminate emit_func_check
get basic call overloading working with 1 bootstrap stage
Merge branch 'master' into call_overload

Conflicts:
	src/codegen.cpp
	test/core.jl
update emit_call for jl_fptr_llvmt => jl_pfptr_llvmt change
explicit casts for MSVC

extern C on jl_sysimage_name

increase stack size when linking
attempt to get setjmp and longjmp assembly working in MSVC

add .586 to assembly files for masm
MSVC: disable shared libuv library,

extern C on timefuncs, disable sys.dll
use alloca instead of VLA
add getopt.{c,h} from musl-libc for MSVC use

link to license of musl-libc
change .do extension to .dbg.obj

so the compile MSVC wrapper script can recognize the extension
use msvcr120.dll instead of msvcrt.dll for MSVC build

prevent untested MSVC versions from compiling
commit msys_build.sh for reusing dependencies from nightlies
add -DMOJIBAKE_EXPORTS flag when building libmojibake

and when linking flisp
bump mojibake submodule for dllexport fix
replace hex floats with equivalent decimal values
make `a=>b` syntax for `Pair(a,b)`

use Dict(iter) or Dict(::Pair...) as Dict constructors

ref #6739