textproc/rubygem-nokogiri: Update to 1.13.10
- Remove LIB_DEPENDS:
- libxml2 is already in USE_GNOME
- libgcrypt and libgpg-error are indirect dependencies (via libxslt)
- Clean up:
- Remove rubygem-pkg-config from RUN_DEPENDS by moving it to BUILD_DEPENDS
- Remove USES=pkgconfig
- Remove STRIP_CMD from post-install: since it is done by USES=gem
- Update version requirement of BUILD_DEPENDS