getLinuxLdPaths: process should be waited for

[rdesgroppes]

The process created in NativeLibrary.getLinuxLdPaths isn't waited for:

jna/src/com/sun/jna/NativeLibrary.java

Line 992 in 2efd065

Process process = Runtime.getRuntime().exec("/sbin/ldconfig -p");

As a consequence, the JVM keeps a "process reaper" thread up. This happens to be more troublesome than it seems under constrained conditions (performances, resources).

[matthiasblaesing]

@rdesgroppes the description sounds reasonable - it would be great if you could provide a PR that fixes the issue. Feel free to ask if you need help.

[matthiasblaesing]

Fixed via 3e960b3