the clang compiler by default
changed: Makefile files have been a little cleaned
the main Makefile now will not compile winix and winix.so if there
were not any changes to source files (it's faster)
(added Makefile.dep in the global directory with list of all source/header files)
changed: winix version to 0.5.5
git-svn-id: svn://ttmath.org/publicrep/winix/trunk@933 e52654a7-88a9-db11-a3e9-0013d4bc506e
