Do a top level-build:

% cd build/windows-x86_64-normal-server-fastdebug
% make LOG=debug

Then remove a built directory and do an incremental:

% rm -rf jdk/classes/sun/security/provider
% make LOG=debug JDK_FILTER="sun/security/provider" jdk-only
...deleted...
----- Build times -------
Start 2014-02-14 15:41:02
End 2014-02-14 15:41:16
00:00:13 jdk
00:00:14 TOTAL
-------------------------
Finished building Java(TM) for target 'jdk-only'

% ls jdk/classes/sun/security/provider
ls: cannot access jdk/classes/sun/security/provider: No such file or directory

(WOW! :) )

Now touch any source file in that package, and you'll get the expected builds recreated.

% touch sun/security/SecureRandom.java
% make LOG=debug JDK_FILTER="sun/security/provider" jdk-only
----- Build times -------
Start 2014-02-14 15:42:33
End 2014-02-14 15:43:02
00:00:27 jdk
00:00:29 TOTAL
-------------------------
Finished building Java(TM) for target 'jdk-only'

% ls jdk/classes/sun/security/provider
...deleted...
VerificationProvider.class
X509Factory.class
%