Collation fix: make forward accent sorting the default [BZ #17750]

Collation fix: make forward accent sorting the default [BZ #17750]

	[BZ #17750]
	* Makefile: add fr_CA.UTF-8 to test-input and LOCALES.
	* localedata/fr_CA.UTF-8.in: New file with test data for backward
	accents sorting.
	* localedata/fr_FR.UTF-8.in: Fix test data for forward accents
	sorting.
	* localedata/locales/cs_CZ (LC_COLLATE): Remove “define DIACRIT_FORWARD”
	* localedata/locales/de_DE (LC_COLLATE): Likewise.
	* localedata/locales/hu_HU (LC_COLLATE): Likewise.
	* localedata/locales/lb_LU (LC_COLLATE): Likewise.
	* localedata/locales/yuw_PG (LC_COLLATE): Likewise.
	* localedata/locales/fr_CA (LC_COLLATE): Add “define DIACRIT_BACKWARD”
	* localedata/locales/iso14651_t1_common: Use “ifdef DIACRIT_FORWARD”
	instead of “ifdef DIACRIT_BACKWARD”.

The only locale which currently needs backward accents sorting is fr_CA.
Therefore, forward accents sorting should be the default.

Before this patch, backwards accent sorting was the default and all
locales except fr_CA had to use

    define DIACRIT_FORWARD

before

    copy "iso14651_t1"

Most locales didn’t do that and thus got the inappropriate backwards accents sorting
by accident. Now only the fr_CA locale needs to use

    define DIACRIT_BACKWARD

before

    copy "iso14651_t1"

Original patch slightly modified by: Mike FABIAN <mfabian@redhat.com>