css file belong to same group is not taken from cache

[GoogleCodeExporter]

What steps will reproduce the problem?
1. split the css file in 2 group i.e common in 2 different page
2. put g:compress tag between 2 groups
3. run the app

What is the expected output? What do you see instead?
The same group file should be taken from cache.

What version of the product are you using? On what operating system?
1.0.9

Please provide any additional information below.
let us take an example.
We have 2 jsp file. File1.jsp and File2.jsp
File1.jsp
<g:compress>
<a.css>
<b.css>
</g:compress>
<g:compress>
<c.css>
<d.css>
</g:compress>

File2.jsp
<g:compress>
<a.css>
<b.css>
</g:compress>
<g:compress>
<e.css>
<f.css>
</g:compress>

so we have created 2 g:compress tag in File1 and File2.

if we load the File2.jsp after File1.jsp the combine?XXXX.css should be taken 
from the cache, but its loading again from the server.

Original issue reported on code.google.com by er.manoj...@gmail.com on 9 Apr 2014 at 7:00