test-convert-svn-*: no longer need the url building code

convert: default to file protocol when no :// found for svn repo url Edited by pmezard: add path separator normalization

keyword: improve English

bookmarks: improve English

Generally replace "file name" with "filename" in help and comments.

Spell Mercurial as a proper noun

win32text: drop disabling portion of test disabling extension leaves dirstate confused about whether affected files are clean or not, not much point testing it.

i18n-de: Synchronised with hg.pot translated by Fabian Kreutz <fabian.kreutz@qvantel.com> Tobias Bell <tobias.bell@gmail.com>

i18n-pt_BR: synchronized and updated - synchronized with hg 6019e6517f95 - translated remaining messages - many spelling and formatting fixes

convert: better support for CVS branchpoints (issue1447) This records the branches starting at individual CVS file revisions, using the symbolic names map rather than just the branches information. This information is used to generate Mercurial changesets. Despite the changes, the CVS conversion still suffers heavily from cvsps' deficiencies in generating a correct representation of the CVS repository history.