libproxy-2.7 -> libproxy

[Juanito]

Since the python part of the libproxy extension seems to be little used, I renamed the extension and dropped the python dependency - python remains an optional dependency.

Note also that libproxy depends on webkit, but since webkit depends on libproxy via glib-networking, I removed the webkit dependency from libproxy to avoid the circular recursive dependency.

Since it's difficult to be sure I caught all possible circular references, please report if the apps gui/tce-load halts unexpectedly for extensions using libproxy.

[netnomad]

i just want to inform you about the md5sum error in libproxy.
http://forum.tinycorelinux.net/index.php/topic,13683.msg76279.html#msg76279