Patch from Chris Shoemaker to make various spelling corrections and a

[David Hampton]

Log Message:
-----------
Patch from Chris Shoemaker to make various spelling corrections and a
couple of line wrap fixes.  Adds comments to mark thread unsafe code.
Adds various other documentation.

Tags:
----
gnucash-gnome2-dev

Modified Files:
--------------
    gnucash:
        ChangeLog
        GNOME2_STATUS
        HACKING
    gnucash/src/app-utils:
        config-var.scm
        gnc-component-manager.h
    gnucash/src/backend/file:
        gnc-schedxaction-xml-v2.c
    gnucash/src/backend/postgres:
        gncquery.c
    gnucash/src/business/business-utils:
        business-options.scm
    gnucash/src/doc:
        multicurrency-discussion.txt
    gnucash/src/engine:
        Query.h
        SX-book.c
        SchedXaction.c
        TransactionP.h
        gnc-numeric.h
        guid.c
        qofbook.h
        qofclass.c
        qofclass.h
        qofquery.c
        qofquery.h
        qofsession.c
    gnucash/src/experimental/cgi-bin:
        gnc-server.c
    gnucash/src/gnome:
        dialog-scheduledxaction.c
        dialog-sxsincelast.c
    gnucash/src/gnome-utils:
        dialog-utils.c
        gnc-amount-edit.c
        gnc-amount-edit.h
        gnc-date-format.c
        gnc-plugin-manager.h
        gnc-plugin.h
        gnc-tree-model-account.c
        gnc-tree-model.c
    gnucash/src/report/report-gnome:
        gw-report-gnome-spec.scm
        report-gnome.scm
    gnucash/src/report/report-system:
        html-document.scm
        html-table.scm
        report-utilities.scm
        report.scm