buildsystem; added REPOSITORY_VER variable in crossplatform.mk for fetching repository version.
 - using -DREPOSITORY_VERSION="$(REPOSITORY_VER)" to pass info to preprocessor.
 - we only support git for now.
ide;debugger; tweaked provide source files location directory stuff for toggling breakpoints in files outside any project.
ide;debugger; fixed GdbExit doesn't wait for new valgrind threads to exit. threads were accessing deleted debugger.
buildsystem,epj2make,ide; (#996-related) --WIP-- fixed remaining issues with .ec modules containing ampersands or projects in paths that have ampersands in it.