tools-source: fix gcc-4.7 support by handling return values properly
fl_wrapper: fix gcc 4.7 warnings by handling return values properly
fl_wrapper: add support for /lib/x86_64-linux-gnu/libc.so.6 style
config: fix confdialog warning
sde-download: improved to use download.mirror_list if it is set in ~/.sde/settings making mirror-list fetching more flexible