Partly revert r19148, "Bug #615168: Remove instances of (use-modules (ice-9 slib))..."

Apparently guile-1.6 needs this in more places than I thought at r19148.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@19154 57a11ea4-9604-0410-9ed3-97b8803252fd

src/app-utils/c-interface.scm

@@ -15,6 +15,7 @@
 ;; 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652
 ;; Boston, MA  02110-1301,  USA       gnu@gnu.org
 
+(use-modules (ice-9 slib))
 (use-modules (ice-9 syncase))
 
 (define (gnc:error->string tag args)

src/business/business-reports/aging.scm

@@ -26,6 +26,7 @@
 
 (define-module (gnucash report aging))
 
+(use-modules (ice-9 slib))
 (use-modules (gnucash main))
 (use-modules (gnucash printf))
 (use-modules (gnucash gnc-module))

src/business/business-reports/easy-invoice.scm

@@ -31,6 +31,7 @@
 (define-module (gnucash report easy-invoice))
 
 (use-modules (srfi srfi-1))
+(use-modules (ice-9 slib))
 (use-modules (gnucash printf))
 (use-modules (gnucash gnc-module))
 

src/business/business-reports/fancy-invoice.scm

@@ -49,6 +49,7 @@
 (define-module (gnucash report fancy-invoice))
 
 (use-modules (srfi srfi-1))
+(use-modules (ice-9 slib))
 (use-modules (gnucash printf))
 (use-modules (gnucash gnc-module))
 

src/business/business-reports/invoice.scm

@@ -25,6 +25,7 @@
 (define-module (gnucash report invoice))
 
 (use-modules (srfi srfi-1))
+(use-modules (ice-9 slib))
 (use-modules (gnucash printf))
 (use-modules (gnucash gnc-module))