Remove UNICODE_CFLAGS (and some other stuff that's redundant with

Remove UNICODE_CFLAGS (and some other stuff that's redundant with

	* Makefile.am (INCLUDES): Remove UNICODE_CFLAGS (and some other
	stuff that's redundant with EXTRA_GNOME_CFLAGS)
	(libcamel_la_LIBADD): Replace UNICODE_LIBS with GAL_LIBS.

	* camel-search-private.c:
	* camel-pgp-context.c:
	* camel-mime-utils.c: Use gunicode interfaces rather than
	libunicode.

	* camel-charset-map.c: Use gunicode rather than libunicode. (The
	charmap-regen code still depends on libunicode though.)

	* camel-mime-filter-charset.h:
	* tests/message/test2.c (convert): Use iconv rather than
	unicode_iconv.

	* providers/smtp/Makefile.am (libcamelsmtp_la_LIBADD):
	* providers/pop3/Makefile.am (libcamelpop3_la_LIBADD):
	* providers/local/Makefile.am (libcamellocal_la_LIBADD): Remove
	UNICODE_LIBS.

	* camel.c (camel_init): Remove call to unicode_init.

	* camel-mime-parser.c: Remove unused unicode.h include.