Modified myantcompile.el in order in detects correctly the root folder
(Java project), not only by the presence of a "build.xml" ant file but
also if a "src" directory is present.
Add function to myantcompile.el to obtain package FQN from the directory
structure in which the current file is. It is used in newclass snippet
(Yasnippet) to determine the defautl value of package declaraction when
defining a new class (Emacs).