Rename map_pkg_to_dep() to find_pkg_match().

The latter is a bit more descriptive and easier to follow.  Update the
function documentation while here, and convert a DEBUG printf to a
TRACE().

depends.c

@@ -165,7 +165,7 @@ show_direct_depends(const char *pkgarg)
 		printf(MSG_DIRECT_DEPS_FOR, pkgname);
 		SLIST_FOREACH(pdp, deptreehead, next) {
 			if (package_version && 
-			    (rpkg = map_pkg_to_dep(&r_plisthead, pdp->depend))
+			    (rpkg = find_pkg_match(&r_plisthead, pdp->depend))
 			     != NULL)
 				printf("\t%s\n", rpkg->full);
 			else
@@ -208,7 +208,7 @@ show_full_dep_tree(const char *pkgarg, const char *depquery, const char *msg)
 
 	SLIST_FOREACH(pdp, deptreehead, next) {
 		if (package_version && 
-		    (rpkg = map_pkg_to_dep(plisthead, pdp->depend)) != NULL)
+		    (rpkg = find_pkg_match(plisthead, pdp->depend)) != NULL)
 			printf("\t%s\n", rpkg->full);
 		else
 			printf("\t%s\n", pdp->depend);

impact.c

@@ -194,7 +194,7 @@ deps_impact(Plisthead *impacthead, Pkglist *pdp)
 		return 1;
 
 	/* record corresponding package on remote list*/
-	if ((rpkg = map_pkg_to_dep(&r_plisthead, pdp->depend)) == NULL)
+	if ((rpkg = find_pkg_match(&r_plisthead, pdp->depend)) == NULL)
 		return 1; /* no corresponding package in list */
 
 	XSTRCPY(remotepkg, rpkg->full);

pkg_str.c

@@ -133,19 +133,20 @@ unique_pkg(const char *pkgname, const char *dest)
 	return u_pkg;
 }
 
-/* return a pkgname corresponding to a dependency */
+/*
+ * Return first matching SLIST entry in package list, or NULL if no match.
+ */
 Pkglist *
-map_pkg_to_dep(Plisthead *plisthead, char *depname)
+find_pkg_match(Plisthead *plisthead, char *match)
 {
 	Pkglist	*plist;
 
-	SLIST_FOREACH(plist, plisthead, next)
-		if (pkg_match(depname, plist->full)) {
-#ifdef DEBUG
-			printf("match ! %s -> %s\n", depname, plist->full);
-#endif
+	SLIST_FOREACH(plist, plisthead, next) {
+		if (pkg_match(match, plist->full)) {
+			TRACE("Matched %s with %s\n", match, plist->full);
 			return plist;
 		}
+	}
 
 	return NULL;
 }
@@ -332,7 +333,7 @@ glob_to_pkgarg(char **globpkg, int *rc)
 		if (strpbrk(globpkg[i], GLOBCHARS) == NULL)
 			pkgargs[count] = xstrdup(globpkg[i]);
 		else {
-			if ((plist = map_pkg_to_dep(&r_plisthead,
+			if ((plist = find_pkg_match(&r_plisthead,
 					globpkg[i])) == NULL) {
 				fprintf(stderr, MSG_PKG_NOT_AVAIL, globpkg[i]);
 				count--;

pkgin.h

@@ -263,7 +263,7 @@ char		*read_repos(void);
 /* pkg_str.c */
 int		find_preferred_pkg(const char *, char **);
 char	   	*unique_pkg(const char *, const char *);
-Pkglist		*map_pkg_to_dep(Plisthead *, char *);
+Pkglist		*find_pkg_match(Plisthead *, char *);
 uint8_t		non_trivial_glob(char *);
 char		*get_pkgname_from_depend(char *);
 int		exact_pkgfmt(const char *);

sqlite_callbacks.c

@@ -124,7 +124,7 @@ pdb_rec_depends(void *param, int argc, char **argv, char **colname)
 			plisthead = &r_plisthead;
 
 		/* map corresponding pkgname */
-		if ((pkg_map = map_pkg_to_dep(plisthead, deptree->depend)) != NULL)
+		if ((pkg_map = find_pkg_match(plisthead, deptree->depend)) != NULL)
 			deptree->name = xstrdup(pkg_map->name);
 		else
 			/* some dependencies just don't match anything */