simplify code which computes the required languages

fix vars.mk never appended to config.mk

add optional include file for the checklib function - fixes #305

use cc.mk as default if someone does not want to create a separate mk file for every toolchain

fix automatic feature disabling failed when more than one dependency is missing

check compilers before any dependency checks

add basic support for the lang element - fixes #284

add support for cxxflags and fix lang parser

basic implementation of shId()

fix bogus version constraint test - relates to #294

(0) -10 +10 tip

mercurial