#93 [Internal] Fix compiler warnings w.r.t. sun internal api

[Hendrikus]

[javac] import com.sun.org.apache.regexp.internal.RE;
[javac] ^
[javac] /home/hendrik/workspace/webflag/WEB-INF/src/nhb/webflag/db/DBHandler.java:20: warning: com.sun.org.apache.regexp.internal.RESyntaxException is Sun proprietary API and may be removed in a future release
[javac] import com.sun.org.apache.regexp.internal.RESyntaxException;
[javac] ^
[javac] /home/hendrik/workspace/webflag/WEB-INF/src/nhb/webflag/db/DBHandler.java:31: warning: com.sun.org.apache.regexp.internal.RE is Sun proprietary API and may be removed in a future release
[javac] private static RE reInt;
[javac] ^
[javac] /home/hendrik/workspace/webflag/WEB-INF/src/nhb/webflag/db/DBHandler.java:32: warning: com.sun.org.apache.regexp.internal.RE is Sun proprietary API and may be removed in a future release
[javac] private static RE reIntList;
[javac] ^
[javac] /home/hendrik/workspace/webflag/WEB-INF/src/nhb/webflag/db/DBHandler.java:35: warning: com.sun.org.apache.regexp.internal.RE is Sun proprietary API and may be removed in a future release
[javac] reInt = new RE("^-?[0-9 ]*$");
[javac] ^
[javac] /home/hendrik/workspace/webflag/WEB-INF/src/nhb/webflag/db/DBHandler.java:36: warning: com.sun.org.apache.regexp.internal.RE is Sun proprietary API and may be removed in a future release
[javac] reIntList = new RE("^-?[0-9, ]*$");
[javac] ^
[javac] /home/hendrik/workspace/webflag/WEB-INF/src/nhb/webflag/db/DBHandler.java:37: warning: com.sun.org.apache.regexp.internal.RESyntaxException is Sun proprietary API and may be removed in a future release
[javac] } catch (RESyntaxException e) {
[javac] ^