CLEANUP: sample: report "converter" instead of "conv method" in error messages

This was inherited from the very early stick-tables code but it's about
time to produce understandable error messages :-)
diff --git a/src/acl.c b/src/acl.c
index df83ef4..43b7b0b 100644
--- a/src/acl.c
+++ b/src/acl.c
@@ -242,7 +242,7 @@
 
 			if (*arg && *arg != ',') {
 				if (ckw)
-					memprintf(err, "ACL keyword '%s' : missing comma after conv keyword '%s'.",
+					memprintf(err, "ACL keyword '%s' : missing comma after converter '%s'.",
 						  aclkw->kw, ckw);
 				else
 					memprintf(err, "ACL keyword '%s' : missing comma after fetch keyword.",
@@ -253,7 +253,7 @@
 			while (*arg == ',') /* then trailing commas */
 				arg++;
 
-			begw = arg; /* start of conv keyword */
+			begw = arg; /* start of converter keyword */
 
 			if (!*begw)
 				/* none ? end of converters */
@@ -267,7 +267,7 @@
 			conv = find_sample_conv(begw, endw - begw);
 			if (!conv) {
 				/* Unknown converter method */
-				memprintf(err, "ACL keyword '%s' : unknown conv method '%s'.",
+				memprintf(err, "ACL keyword '%s' : unknown converter '%s'.",
 					  aclkw->kw, ckw);
 				goto out_free_smp;
 			}
@@ -278,21 +278,21 @@
 				while (*arg && *arg != ')')
 					arg++;
 				if (*arg != ')') {
-					memprintf(err, "ACL keyword '%s' : syntax error: missing ')' after conv keyword '%s'.",
+					memprintf(err, "ACL keyword '%s' : syntax error: missing ')' after converter '%s'.",
 						  aclkw->kw, ckw);
 					goto out_free_smp;
 				}
 			}
 
 			if (conv->in_type >= SMP_TYPES || conv->out_type >= SMP_TYPES) {
-				memprintf(err, "ACL keyword '%s' : returns type of conv method '%s' is unknown.",
+				memprintf(err, "ACL keyword '%s' : returns type of converter '%s' is unknown.",
 					  aclkw->kw, ckw);
 				goto out_free_smp;
 			}
 
 			/* If impossible type conversion */
 			if (!sample_casts[cur_type][conv->in_type]) {
-				memprintf(err, "ACL keyword '%s' : conv method '%s' cannot be applied.",
+				memprintf(err, "ACL keyword '%s' : converter '%s' cannot be applied.",
 					  aclkw->kw, ckw);
 				goto out_free_smp;
 			}
@@ -310,7 +310,7 @@
 				int err_arg;
 
 				if (!conv->arg_mask) {
-					memprintf(err, "ACL keyword '%s' : conv method '%s' does not support any args.",
+					memprintf(err, "ACL keyword '%s' : converter '%s' does not support any args.",
 						  aclkw->kw, ckw);
 					goto out_free_smp;
 				}
@@ -318,7 +318,7 @@
 				al->kw = smp->fetch->kw;
 				al->conv = conv_expr->conv->kw;
 				if (make_arg_list(endw + 1, arg - endw - 1, conv->arg_mask, &conv_expr->arg_p, err, NULL, &err_arg, al) < 0) {
-					memprintf(err, "ACL keyword '%s' : invalid arg %d in conv method '%s' : %s.",
+					memprintf(err, "ACL keyword '%s' : invalid arg %d in converter '%s' : %s.",
 						  aclkw->kw, err_arg+1, ckw, *err);
 					goto out_free_smp;
 				}
@@ -327,13 +327,13 @@
 					conv_expr->arg_p = empty_arg_list;
 
 				if (conv->val_args && !conv->val_args(conv_expr->arg_p, conv, file, line, err)) {
-					memprintf(err, "ACL keyword '%s' : invalid args in conv method '%s' : %s.",
+					memprintf(err, "ACL keyword '%s' : invalid args in converter '%s' : %s.",
 						  aclkw->kw, ckw, *err);
 					goto out_free_smp;
 				}
 			}
 			else if (ARGM(conv->arg_mask)) {
-				memprintf(err, "ACL keyword '%s' : missing args for conv method '%s'.",
+				memprintf(err, "ACL keyword '%s' : missing args for converter '%s'.",
 					  aclkw->kw, ckw);
 				goto out_free_smp;
 			}
diff --git a/src/sample.c b/src/sample.c
index 889ec0c..81349cd 100644
--- a/src/sample.c
+++ b/src/sample.c
@@ -918,7 +918,7 @@
 
 		if (*endt && *endt != ',') {
 			if (ckw)
-				memprintf(err_msg, "missing comma after conv keyword '%s'", ckw);
+				memprintf(err_msg, "missing comma after converter '%s'", ckw);
 			else
 				memprintf(err_msg, "missing comma after fetch keyword '%s'", fkw);
 			goto out_error;
@@ -927,7 +927,7 @@
 		while (*endt == ',') /* then trailing commas */
 			endt++;
 
-		begw = endt; /* start of conv keyword */
+		begw = endt; /* start of converter */
 
 		if (!*begw) {
 			/* none ? skip to next string */
@@ -947,7 +947,7 @@
 			/* we found an isolated keyword that we don't know, it's not ours */
 			if (begw == str[*idx])
 				break;
-			memprintf(err_msg, "unknown conv method '%s'", ckw);
+			memprintf(err_msg, "unknown converter '%s'", ckw);
 			goto out_error;
 		}
 
@@ -957,19 +957,19 @@
 			while (*endt && *endt != ')')
 				endt++;
 			if (*endt != ')') {
-				memprintf(err_msg, "syntax error: missing ')' after conv keyword '%s'", ckw);
+				memprintf(err_msg, "syntax error: missing ')' after converter '%s'", ckw);
 				goto out_error;
 			}
 		}
 
 		if (conv->in_type >= SMP_TYPES || conv->out_type >= SMP_TYPES) {
-			memprintf(err_msg, "returns type of conv method '%s' is unknown", ckw);
+			memprintf(err_msg, "returns type of converter '%s' is unknown", ckw);
 			goto out_error;
 		}
 
 		/* If impossible type conversion */
 		if (!sample_casts[prev_type][conv->in_type]) {
-			memprintf(err_msg, "conv method '%s' cannot be applied", ckw);
+			memprintf(err_msg, "converter '%s' cannot be applied", ckw);
 			goto out_error;
 		}
 
@@ -985,14 +985,14 @@
 			int err_arg;
 
 			if (!conv->arg_mask) {
-				memprintf(err_msg, "conv method '%s' does not support any args", ckw);
+				memprintf(err_msg, "converter '%s' does not support any args", ckw);
 				goto out_error;
 			}
 
 			al->kw = expr->fetch->kw;
 			al->conv = conv_expr->conv->kw;
 			if (make_arg_list(endw + 1, endt - endw - 1, conv->arg_mask, &conv_expr->arg_p, err_msg, NULL, &err_arg, al) < 0) {
-				memprintf(err_msg, "invalid arg %d in conv method '%s' : %s", err_arg+1, ckw, *err_msg);
+				memprintf(err_msg, "invalid arg %d in converter '%s' : %s", err_arg+1, ckw, *err_msg);
 				goto out_error;
 			}
 
@@ -1000,12 +1000,12 @@
 				conv_expr->arg_p = empty_arg_list;
 
 			if (conv->val_args && !conv->val_args(conv_expr->arg_p, conv, file, line, err_msg)) {
-				memprintf(err_msg, "invalid args in conv method '%s' : %s", ckw, *err_msg);
+				memprintf(err_msg, "invalid args in converter '%s' : %s", ckw, *err_msg);
 				goto out_error;
 			}
 		}
 		else if (ARGM(conv->arg_mask)) {
-			memprintf(err_msg, "missing args for conv method '%s'", ckw);
+			memprintf(err_msg, "missing args for converter '%s'", ckw);
 			goto out_error;
 		}
 	}