Merge pull request #1758 from dago/pathmax2

Make sure also Solaris x86 gets PATH_MAX

src/google/protobuf/compiler/command_line_interface.cc

@@ -50,9 +50,7 @@
 #include <iostream>
 #include <ctype.h>
 
-#ifdef GOOGLE_PROTOBUF_ARCH_SPARC
 #include <limits.h> //For PATH_MAX
-#endif
 
 #include <memory>
 #ifndef _SHARED_PTR_H