#4918 Fix CFF flavored font embedding for multiple output

[Masamichi Hosoda]

Fix CFF flavored font embedding for multiple output

For multiple output (e.g. -dbackend=eps),
conflict checking needs to be done within each output.

Otherwise, the font which is embedded in the prior output
is not embedded in the subsequent output.

http://codereview.appspot.com/299530043

[Anonymous]

Passes make, make check and a full make doc.

[Anonymous]

Patch on countdown for July 10th.

[Anonymous]

Patch counted down - please push.

[Masamichi Hosoda]

I've pushed to staging.

Issue 4918: Fix CFF flavored font embedding for multiple output
commit 4164bfb62950c46517a21ad1d80131ce27868aa1