I tried modifying the firefox-6.0.2.ebuild in order to emerge firefox-7.0.
After disabling some of the patches provided by the firefox-6.0-patches-0.1 file it emerged succesfully.
system: x86_64, compiled with gcc-4.6.1
I attached the output of:
diff -u firefox-6.0.2.ebuild firefox-7.0.ebuild
no firefox-7.0 ebuild in the portage tree.
firefox-7.0 emerges nicely.
Created attachment 288095 [details]
The modifications starting from firefox-6.0.2.ebuild.
*** This bug has been marked as a duplicate of bug 381245 ***
*** This bug has been marked as a duplicate of bug 384679 ***