Heath Martin's x86_64 patch.

[Derek Atkins]

Log Message:
-----------
Heath Martin's x86_64 patch.

	* macros/autogen.sh:
	  change "head -1" to "head -n 1"
	* src/engine/gnc-numeric.[ch]:
	  change string_to_gnc_numeric() to return gboolean.
	* src/app-utils/gnc-exp-parser.c:
	* src/backend/file/sixtp-dom-parsers.c:
	  use new string_to_gnc_numeric() API
	* src/engine/gnc-lot.c:
	  64-bit safe for x86_64
	* src/gnome/dialog-scheduledxaction.c:
	* src/gnome/dialog-sxsincelast.c:
	* src/gnome/druid-loan.c:
	* src/gnome-utils/dialog-account.c:
	* src/gnome-utils/gnc-query-list.c:
	* src/import-export/import-match-map.c:
	  use GPOINTER_TO_INT and GINT_TO_POINTER macros to be 64-bit safe.

Modified Files:
--------------
    gnucash:
        ChangeLog
    gnucash/macros:
        autogen.sh
    gnucash/src/app-utils:
        gnc-exp-parser.c
    gnucash/src/backend/file:
        sixtp-dom-parsers.c
    gnucash/src/engine:
        gnc-lot.c
        gnc-numeric.c
        gnc-numeric.h
    gnucash/src/gnome:
        dialog-scheduledxaction.c
        dialog-sxsincelast.c
        druid-loan.c
    gnucash/src/gnome-utils:
        dialog-account.c
        gnc-query-list.c
    gnucash/src/import-export:
        import-match-map.c