Bug #645406: Make transaction matching on memo and description case-insensitive

Patch by gnemas:

The function split_find_match() in import-backend.c scores
transactions according to comparisons of amount, date, description,
etc.

I noticed that the comparison of the description and memo fields is
case-sensitive.

This means that my supermarket entries that have descriptions "Giant
Food" do not match the downloaded descriptions "GIANT FOOD".

This applies to both the exact and the 50% match cases, and for both
the memo and the description fields.

The attached patch should fix this.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@20478 57a11ea4-9604-0410-9ed3-97b8803252fd

src/import-export/import-backend.c

@@ -721,13 +721,13 @@ static void split_find_match (GNCImportTransInfo * trans_info,
             const char *memo = xaccSplitGetMemo(new_trans_fsplit);
             if (memo && strlen(memo) != 0)
             {
-                if (safe_strcmp(memo, xaccSplitGetMemo(split)) == 0)
+                if (safe_strcasecmp(memo, xaccSplitGetMemo(split)) == 0)
                 {
                     /* An exact match of memo gives a +2 */
                     prob = prob + 2;
                     /* DEBUG("heuristics:  probability + 2 (memo)"); */
                 }
-                else if ((strncmp(memo, xaccSplitGetMemo(split),
+                else if ((strncasecmp(memo, xaccSplitGetMemo(split),
                                   strlen(xaccSplitGetMemo(split)) / 2)
                           == 0))
                 {
@@ -746,7 +746,7 @@ static void split_find_match (GNCImportTransInfo * trans_info,
             const char *descr = xaccTransGetDescription(new_trans);
             if (descr && strlen(descr) != 0)
             {
-                if (safe_strcmp(descr,
+                if (safe_strcasecmp(descr,
                                 xaccTransGetDescription(xaccSplitGetParent(split)))
                         == 0)
                 {
@@ -754,7 +754,7 @@ static void split_find_match (GNCImportTransInfo * trans_info,
                     prob = prob + 2;
                     /*DEBUG("heuristics:  probability + 2 (description)");*/
                 }
-                else if ((strncmp(descr,
+                else if ((strncasecmp(descr,
                                   xaccTransGetDescription (xaccSplitGetParent(split)),
                                   strlen(xaccTransGetDescription (new_trans)) / 2)
                           == 0))