xulrunner我只记得这个东西非常大～以前是火狐浏览器和chmsee的依赖，现在火狐早早就去掉了这个依赖.别的就不知道了..
看下swt的更新日志
http://gentoo-portage.com/dev-java/swt/ChangeLog#ptabs
这里的changelog显示：
（1）17 Apr 2012; Samuli Suominen <ssuominen@gentoo.org> swt-3.4-r4.ebuild,
swt-3.5.2.ebuild, swt-3.6.1.ebuild, metadata.xml:
Remove obsolete USE="xulrunner" and net-libs/xulrunner dependency since
nothing is using it in tree and 3.7.x series has webkit replacement wrt
#409299
（2）17 Nov 2011; Vlastimil Babka <caster@gentoo.org> +swt-3.7.1.ebuild,
+files/swt-3.7-manifest, metadata.xml:
Version bump. Replaces xulrunner integration and respective USE flag with
webkit. Fixes bug #335165 and #358773. Includes OSGi manifest improvements by
Christoph Brill (egore) <egore@gmx.de> from bug #335165.
swt在3.7版本中用webkit的依赖替换了xulrunner～同时除去了xulrunner的依赖～
你可以用旧的版本.在/etc/portage/package.mask中把新版本都mask掉～重新emerge
看下swt的更新日志
http://gentoo-portage.com/dev-java/swt/ChangeLog#ptabs
这里的changelog显示：
（1）17 Apr 2012; Samuli Suominen <ssuominen@gentoo.org> swt-3.4-r4.ebuild,
swt-3.5.2.ebuild, swt-3.6.1.ebuild, metadata.xml:
Remove obsolete USE="xulrunner" and net-libs/xulrunner dependency since
nothing is using it in tree and 3.7.x series has webkit replacement wrt
#409299
（2）17 Nov 2011; Vlastimil Babka <caster@gentoo.org> +swt-3.7.1.ebuild,
+files/swt-3.7-manifest, metadata.xml:
Version bump. Replaces xulrunner integration and respective USE flag with
webkit. Fixes bug #335165 and #358773. Includes OSGi manifest improvements by
Christoph Brill (egore) <egore@gmx.de> from bug #335165.
swt在3.7版本中用webkit的依赖替换了xulrunner～同时除去了xulrunner的依赖～
你可以用旧的版本.在/etc/portage/package.mask中把新版本都mask掉～重新emerge
