Make experimental locale-specific taxes depending on configure switch.

[Christian Stimming]

Log Message:
-----------
Make experimental locale-specific taxes depending on configure switch.

2005-01-29  Christian Stimming  <stimming at tuhh.de>

	* configure.in, src/tax/us/gncmod-tax-us.c,
	src/report/locale-specific/us/gncmod-locale-reports-us.c,
	src/app-utils/gnc-ui-util.c: Make localized tax categories
	disabled by default; can be enabled by
	--enable-locale-specific-tax switch.

Modified Files:
--------------
    gnucash:
        ChangeLog
        configure.in
    gnucash/src/app-utils:
        gnc-ui-util.c
    gnucash/src/report/locale-specific/us:
        gncmod-locale-reports-us.c
    gnucash/src/tax/us:
        gncmod-tax-us.c