Revert "Add intl/ and getopt/ directories to .gitignore"

This reverts commit e6164373eb4af93ecd0bebe76fb31f604a7ae649.
Those directories are not supposed to exist any more, there's
no need to ignore them.

.gitignore

@@ -8,5 +8,3 @@ configure
 config.*
 aclocal.m4
 stamp-h1
-getopt
-intl