Issue #14 - Use "pending" attribute as a workaround and "tabPending" as variable name
Issue #16 - Expose "restore_pinned_tabs_on_demand" through inline options.
Issue #17 - Improve disabling "Unload Tab" menuitem

Take care about "browser.sessionstore.restore_pinned_tabs_on_demand" and pinned tabs.
Starting branch for maintaining 1.6

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branch : 1.6-hotfix
Add build.sh because version 1.6 was wrongly packed.

Based on https://github.com/voldsoftware/restartless-restart-ffext/blob/16fbe9ddae5/build.sh

--HG--
branch : 1.6-hotfix
Prepare 1.6.1 release

--HG--
branch : 1.6-hotfix
Merge with 1.6-hotfix
Added tag 1.6.1 for changeset a78ee4fe7766