AliInst: compile AliEn from Mountain Lion on
Updated old link (newton) to the new GitHub one
AliInst: C++ flags and ALICE versions in bugreport
AliEnv: changed default installation dir
AliEnv: separate config file from script
AliEnv: auto-detect ALICE_PREFIX
AliEnv: unset AliConf function when cleaning
AliEnv: automatic updater
AliEnv: removed debug output and comments
AliEnv: cleanup of old autoupdate attempt
AliEnv: update every 6 h (was 12 h)
Merge branch 'feature-alienv-autoupdate'
AliEnv: use system's definitions for rm, cp, mv

Don't use, e.g., aliased ones
Merge branch 'master' into feature-alirelval