*swt-3.7.1 (17 Nov 2011) 17 Nov 2011; Vlastimil Babka (caster) +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.