(no title)

gpgme 0.3.x contains a gpgme_cancel(), 0.4.x, 0 <= x <= 4, doesn't. 0.4.x, x >= 5, does.
AC_CHECK_LIB just looks whether the given symbol is defined in the library and doesn't seem to respect the ldflags argument when trying to _find_ the library. Therefore, we can't use it, since it gives false positives (find 0.3.x) as well as false negatives (finds 0.4.x, x <= 4) if another gpgme is installed, and gpgme 0.4.5 (or later) is in an "unusual" path. We now use AC_TRY_LINK intead, wich will fail for gpgme 0.3.x, too, since the gpgme types have new names in gpgme 0.4.x. It also respects the currently set CFLAGS and LIBS

svn path=/trunk/kdepim/libkdenetwork/gpgmepp/; revision=298234