Make libtool executable [skip appveyor]

Author: sergeyklay

.travis.yml

@@ -62,8 +62,6 @@ before_script:
 
 script:
   - .ci/run-tests.sh
- # To make sure we're able to parse/send coverage report
-  - find . -type f \( -name '*.gcno' -o -name '*.gcda' \) -print
 
 after_failure:
   - .ci/after-failure.sh

parser.mk

@@ -53,5 +53,6 @@ $(srcdir)/parser/zephir.c: $(srcdir)/parser/zephir.lemon $(srcdir)/parser/lemon
 
 # For more see: https://stackoverflow.com/q/49476206
 .PHONY: patch-libtool
-patch-libtool: libtool
+patch-libtool: $(srcdir)/libtool
 	$(AWK) '/case \$$p in/{print;print "\t    *.gcno)\n\t    ;;";next}1' $^ > $^.tmp && mv $^.tmp $^
+	chmod +x $^