* Make dia build w/ Spack's X bits (and misc)
X related
- need to depend on the +X variant of gtkplus
- need to depend on freetype
misc
- fix path to tarball
* Make freetype a "build" dependency
* Freetype is not just a build dep
* Dia requires libxml2.
* Clean up dependencies for Dia (and add X11 deps).
+ Remove dependencies on cairo and libpng. The will be satisfied via gtkplus.
+ Add dependencies on X11 libraries: libsm, libuuid, libxinerama, libxrender.
+ From a dependency diagram, it doesn't appear that we need libxml2 since this
dependency should be come in through cairo (via gtkplus). However, Dia will
not build without it.
