Improved subversion support for powerline

SVN prompt also when in subdirectories that don't contain .svn
Show correct SVN status for powerline

themes/powerline/powerline.base.bash

@@ -98,6 +98,8 @@ function __powerline_scm_prompt {
       scm_prompt+="${SCM_CHAR}${SCM_BRANCH}${SCM_STATE}"
     elif [[ "${SCM_HG_CHAR}" == "${SCM_CHAR}" ]]; then
       scm_prompt+="${SCM_CHAR}${SCM_BRANCH}${SCM_STATE}"
+    elif [[ "${SCM_SVN_CHAR}" == "${SCM_CHAR}" ]]; then
+      scm_prompt+="${SCM_CHAR}${SCM_BRANCH}${SCM_STATE}"
     fi
     echo "$(eval "echo ${scm_prompt}")${scm}|${color}"
   fi