update binary and remove a useless makefile
Add SDC file and fix device family autodetecion

It adds support for SDC files (timing constraints).
It fixes the device family autodetection.
Files with 'svh' extension are recognized as SystemVerilog source.
add makefile in the main directory
Merge remote-tracking branch 'upstream/master' into proposed-master

Conflicts:
	.gitignore
	hdlmake
	src/srcfile.py