Allow to specify a path to vm.args through command-line arguments
Merge pull request #248 from ichernetsky/master

Allow to specify a path to vm.args through command-line arguments
Add relx.cmd to .gitignore
Merge pull request #249 from syl20bnr/gitignore_relx_cmd

Add relx.cmd to .gitignore
Fix *bin_windows.dtl boot script path

In order to make it work with both compressed and uncompressed releases
Merge pull request #250 from syl20bnr/fix_boot_script_console_windows

Fix *bin_windows.dtl boot script path
fix function defs for function that take vsn(), which can be an atom
include state in format_error/2
use providers PRV_ERROR and format_error/2
support proper return value of ec_git_vsn of {ok, string()}
support proper return value of ec_git_vsn of {ok, string()}