Upgrade to upstream SVN revision 1689959.
patch-jpeg and patch-nss have been upstreamed and are no
patch-i118574 no longer seems necessary for a clean build.
Regnerate patch-i114430 with make makepatch.
Always build using boost from ports instead of the bundled boost,
updating the BUILD_DEPENDS with the header that configure looks
Add missing LIB_DEPENDS that are brought in by other dependencies,
but are directly linked as requested by pkgconfig.
Build using sane and xrender headers from ports instead of
Update LICENSE* to account for bundled software.
Reformat pkg-message and mention that the scanner interface
can be enabled by installing sane-backends.