The netsurf.h header should *only* contain the registration, core
initialisation and finalisation methods. Version information is best
placed in its own header.
Also remove any unneeded inclusion of this header limiting it to
solely the places the relevant API is required.
Fix up llcache tester to reflect nsurl changes
Make handling of http:,http:/,http:// consistent
Fix buffer overflow when presented with an input string: "http://"
svn path=/trunk/netsurf/; revision=13051
