build2 - build2 build system

Age	Commit message (Collapse)	Author	Files	Lines
2015-12-07	Add support for specifying minimum required build2 version	Boris Kolpackov	1	-0/+31
	The syntax is: using build@0.1.0-a1 The idea is that we will later also use it for modules and 'build' is a special, the "build system itself" module. Also fix a problem with peeking and lexer mode switching.