Signed-off-by: Rinigus <rinigus.git@gmail.com>

Linker command line was incorrect, glib was missing from the NEEDED section.

Also, made wsp_header_iter_is_multipart() check stricter.
(actually check that it's one of application/vnd.wap.multipart content types)

Those functions were parsing a strange representation of textual
Content-Type like headers but the syntax they understood wasn't
HTTP compliant. This is pretty useless, has nothing to do with
WSP and doesn't belong here.

Also changed versioning a bit. Now application would be linking
against libwspcodec-X.Y.so rather than libwspcodec.so.X

Moved the sources to wspcodec directory so that it resembles the
layout of the installed include files. Makes it easier to build
something that references libwspcodec without installing the devel
package.

Made content type field configurable. This resolves the conflict
between WSP Content-Type and X-Mms-Report-Allowed (both are 0x11)

Bumped version to 2.0.0 because this update is not backward compatible.