make FeatureType.default an xs:boolean - fixes #296

replace type="exec" with exec="true" - fixes #295

add simple SLF4J provider - fixes #292

some more code cleanup

first minor code improvements

add RegressionTest - fixes #264

fix missing initialization of CFLAGS and LDFLAGS when toolchain is unknown - fixes #288

(0) -30 -10 -7 +7 +10 +30 tip

mercurial