gnu: subversion: Download from apache archive site. * gnu/packages/subversion.scm (subversion): Download from archive.apache.org, where versions are kept for a longer period of time. Previously, we downloaded from the mirrors, which keep only the most recent versions.
gnu: Use `mirror://apache' where applicable. * gnu/packages/libapr.scm (libapr, libaprutil): Use `mirror://apache'. * gnu/packages/subversion.scm (subversion): Likewise.
gnu: Add Subversion. * gnu/packages/subversion.scm: New file. * Makefile.am (MODULES): Add it.