IDEA-111089 (Intention/Inspection "Create missing 'switch' branches" should add before default)
build script launcher for CE fixed (IDEA-111236)
fixed starting build scripts from IDEA
HgVersion and validation refactoring

*HgVersion class created to update and parse hg version or throw appropriate exception;
*update and store actual HgVersion in HgVcs (in activate meth and after saving config in panel);
*test for version parsing added;
*hg validation changed: perform validation without hg version command (see gitExecutableValidator);
*annotations added;
*links to config settings and hg update added to error message.
cleanup
IDEA-111176 Invalid Inspection - Element PUBLIC/PROTECTED/STATIC is not allowed here