because glob(3) doesn't do what we should hop, I implemented our own
searchFiles and searchFilesExt.
Search for files, optional recursively in a dir, and with a certain extension.


git-svn-id: https://ilk.uvt.nl/svn/sources/libticcutils/trunk@15993 12f355fe-0486-481a-ad91-c297ab22b4e3